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Issue of September 13, 2026 · SundayNo. 103

Kaliningrad at the centre of a rhetorical exchange: Sikorski called for "aggressive" NATO exercises near Kaliningrad Oblast

4.4/10 elevated ↑ +0.1vs. previous issue
In this issue ▾
  1. Top stories of the day
  2. By area, in detail
  3. Contradictions and discrepancies
  4. Escalation risk assessment (0–10)
  5. Sources

Issue of 13 September 2026 — covering 12 – 13 September 2026

Note: the previous issue is dated 11 September 2026 (escalation risk 4.3/10). The kinetic contour of the NATO–Russia line stayed quiet in the 12–13 September window: no new violations of Baltic airspace, no combat scrambles of NATO Baltic Air Policing fighters and no direct NATO–Russia incidents were recorded on the calendar days of the window (the last real brush against the Baltic air contour remains dated 1 September). The main fresh content of the window is rhetorical and organisational, centred on Kaliningrad and Belarus: Poland's foreign minister Radosław Sikorski, at the YES forum in Kyiv (said 11 September, widely reported 12 September), called on NATO to hold "aggressive" exercises near Kaliningrad Oblast to force Moscow to redeploy forces from Ukraine; on 13 September Kremlin spokesman Dmitry Peskov replied that Russia "is taking the appropriate measures to ensure the security" of the region. In parallel, Belarus continues a combat-readiness check of its army, which Alexander Lukashenko on 11 September at the Obuz-Lesnovsky range (near Baranavichy) extended to "the whole army, up to mobilisation" — a fact dated 11 September that yesterday's issue missed; it is corrected in the "Contradictions" section and in the corrections log. The military background is still a high density of allied exercises along the eastern border (Strong Griffin 2026 in Lithuania until 20 September, Namejs 2026 in Latvia until 8 October, Canada's Oak Projection until 14 September, territorial exercises of Lithuanian volunteers in Skuodas and Zarasai on 12–13 September). In Estonia the window fell on a weekend: no new decisions on the defence ministry, the Riigikogu reconvenes on 14 September, and the Reform Party board is due to confirm defence-minister candidate Martin Herem on 15 September.

Top stories of the day

  1. 12–13.09 — Kaliningrad at the centre of a rhetorical exchange: Sikorski called for "aggressive" NATO exercises near Kaliningrad Oblast; the Kremlin replied it is "taking measures to ensure the security" of the region. Speaking on 11 September at the annual Yalta European Strategy (YES) meeting in Kyiv (reports appeared on 12 September), Poland's foreign minister Radosław Sikorski said Warsaw is watching Kaliningrad Oblast "very closely", that there are currently "practically no troops" there, and proposed holding, on NATO's side, "exercises aggressive enough that he [Putin] is not sure what exactly we will do" — so that Russia has to move some forces out of Ukraine. Asked whether he was proposing that NATO seize Kaliningrad Oblast, Sikorski answered: "No". On 13 September Kremlin spokesman Dmitry Peskov, in a comment to the newspaper Izvestia (EU-sanctioned outlet — no direct link), said Russia "is taking the appropriate measures to ensure the security of this most important Russian region"; no specific steps were named. The exchange lands on an accumulated series of statements: on 4 September SVR director S. Naryshkin spoke of NATO "simulating a blockade of Kaliningrad", on 10 September a Seimas committee in Lithuania backed repealing the constitutional ban on WMD deployment. Credibility: Sikorski's remarks are confirmed by several independent Ukrainian and Polish sources; Peskov's reply comes via non-registry Russian outlets (Vedomosti) and registry ones (Izvestia, text only). Neither side announced concrete military steps — this is a rhetorical, not a kinetic, episode. Sources: European Pravda — Poland's FM calls on NATO to step up exercises near Russia's Kaliningrad Oblast (12.09.2026); UNN — Sikorski called on NATO to increase exercises near Kaliningrad; Vedomosti — Peskov: Russia will take measures for Kaliningrad's security (13.09.2026); Izvestia (13.09) — EU-sanctioned outlet — no direct link.

  2. 12–13.09 — Belarus: the army combat-readiness check continues, extended by Lukashenko on 11 September to "the whole army, up to mobilisation"; yesterday's issue missed this — corrected. On 11 September at the Obuz-Lesnovsky range (Brest region, near Baranavichy — roughly 100–150 km from the Polish and Lithuanian borders) Alexander Lukashenko said: "The army needs shaking up, the time has come. The whole army. We'll check everyone. Up to mobilisation", adding that "we are preparing for war so that there won't be one" and that Belarus "is not going to attack anyone". By his account an artillery brigade is currently being checked (the Security Council secretariat earlier named the 51st Artillery Brigade, whose check began on 24 August) together with signals units; tank and motor-rifle units were checked earlier. No actual mobilisation has been declared: this is about expanded checks in which individual units are brought up to wartime strength. In the 12–13 September window the check continues; the Belarusian defence ministry reported (via BelTA — access blocked by Baltic regulators — no direct link) that it is entering its final stage with exercises at the 227th range near Barysaw. ⚠️ Contradiction / correction: the 12 September issue stated that "no separate Belarusian military events dated within the window were identified" — this is incorrect, the statement is dated 11 September and fell inside the 11–12 September window. Details in "Contradictions" and in corrections.json. Assessment: confirmed by at least three independent sources (Kyiv Independent, Meduza, the official portal belarus.by); the "non-aggression" statements are Minsk's position and cannot be verified independently. Sources: Kyiv Independent — 'The time has come': Lukashenko inspects troops, says army 'needs shaking up' (11.09.2026); Meduza — 'Up to mobilization': Lukashenko says it's time to 'shake up' Belarus's army (11.09.2026); belarus.by — Lukashenko confirms plans to continue testing combat readiness of Belarusian troops; BelTA — access blocked by Baltic regulators — no direct link.

  3. 12–13.09 — Estonia: a weekend pause in the defence-ministry crisis — no new decisions, candidate Herem publicly defends risk-taking in arms procurement; the next steps come on 14–15 September. There were no new personnel or parliamentary decisions in the window: the Riigikogu reconvenes on Monday, 14 September (when it will become clear how the opposition formalises a no-confidence motion against PM Kristen Michal — 21 signatures are needed), the Reform Party board is due to confirm Martin Herem as defence-minister candidate on 15 September, and 15 September is also the last working day of dismissed permanent secretary Kaimo Kuusk. The substantive fresh signal is Herem's interview with ERR (Vikerhommik programme) published in the window: in arms procurement "risks sometimes have to be taken", inaction is the worse choice, and abandoning aid to Ukraine would be criminal. This is a direct reference to the shell scandal (the ~€70m advance to Italy-registered Datasel S.R.L., see the 05.09 corrections entry) that cost Hanno Pevkur his post, and a continuation of the dispute over how the ministry should be run (Herem vs Pevkur on a "political request" for the threat assessment, see the 12.09 issue). Sources: ERR — Herem: relvaostudel tuleb vahest võtta riske, tegutsematus on halvem valik; ERR — Opposition split on defense official's dismissal and snap election call; ERR — Isamaa, Center and EKRE to move forward with PM no-confidence motion.

  4. 12–13.09 — Region: the overlap of allied exercises along the eastern border persists (Strong Griffin 2026, Namejs 2026, the closing Oak Projection, territorial exercises in Lithuania on 12–13.09); the Baltic air contour was quiet in the window. In Lithuania the active phase of Strong Griffin 2026 continues in Švenčionys district near the Belarusian border (2–20 September; ~2,500 troops, ~500 pieces of equipment; US, Poland, Netherlands, France, Portugal plus Ukraine and Moldova; emphasis on unmanned systems and counter-UAS); over the weekend of 12–13 September the 304th Infantry Company of the Žemaitija district of the National Defence Volunteer Forces held scheduled exercises in Skuodas town and district, and on 10–13 September the 508th Company of the Vytis district trained in Zarasai district near the Latvian border (using drones and pyrotechnics; the municipalities stress there is no link to the geopolitical situation). In Latvia the nationwide Namejs 2026 continues (2 September – 8 October; ~12,000 soldiers and national guardsmen plus allies), and Canada's NATO brigade is completing Oak Projection at the Sēlija range (5–14 September). On the calendar days of the window no new violations of Baltic airspace, combat scrambles or intercepts were recorded. Sources: Skuodas municipality — Dėl karinių pratybų (12–13.09); Zarasuose.lt — Rugsėjo 10–13 dienomis Zarasų rajone vyks Lietuvos kariuomenės pratybos; LRT — Švenčionių rajone prasideda tarptautinės pratybos „Stiprus Grifonas 26" (02.09.2026); eng.lsm.lv — Namejs 2026 military drills take place throughout Latvia (02.09.2026); eng.lsm.lv — NATO will be projecting oak in Latvia (Oak Projection, 03.09.2026).

By area, in detail

Construction of military facilities and fortifications

  • No new reports dated 12–13 September on the Baltic Defence Line / border fortifications were identified in the window. Structural background unchanged (context): Lithuania is expanding its border counter-mobility strip and network of engineering parks (their number raised from 27 to 50, deadline end-2028); Latvia plans to equip its entire eastern border with automated anti-drone systems by the end of September (statement by defence minister R. Melnis, July) — no fresh progress report in the window.
  • Poland — East Shield (Tarcza Wschód, structural background): engineering troops have completed works on the first ~150 km, with more than 200 km due by end-2026; since 1 July the Territorial Defence Forces include a Border Defence Component (1st Podlaska, 4th Warmińsko-Mazurska, 19th Nadbużańska and 20th Przemyska Border Defence Brigades). No new official announcement on the programme dated 12–13 September was identified. Sources: Tarcza Wschód — official programme site; TVP World — Poland creates border defense component on eastern frontier.

Deployment and movement of troops

  • Lithuania — Strong Griffin 2026 and territorial exercises (dated within the window): the active phase in Švenčionys district continues; volunteer exercises in Skuodas (12–13.09) and Zarasai (10–13.09) — see Top stories, item 4.
  • Latvia — Namejs 2026 + Oak Projection (dated within the window): field episodes nationwide; Oak Projection ends on 14 September (see Top stories, item 4).
  • Poland — permanent US base (context, dated 10–11 September): Deputy PM and defence minister Władysław Kosiniak-Kamysz, at events in Bircza (Subcarpathia, 11 September) and in interviews on 10–11 September, said talks with the US on a permanent American troop presence have entered the final phase, that it is chiefly about one base (not necessarily in a single location), that Poland's own investment is estimated at PLN 15–17 billion, and that a decision is expected "in the coming weeks or months". The headline figure is confirmed by several independent Polish outlets (Defence24, TVN24, Rzeczpospolita) but remains a statement by one party to the talks; no location has been named. Sources: Defence24 — Stała baza USA w Polsce. Kosiniak-Kamysz ujawnił koszt; TVN24 — Stała baza amerykańskich żołnierzy w Polsce ma nas kosztować 15–17 mld zł.
  • Belarus — readiness check "up to mobilisation" (dated 11 September, continuing in the window): see Top stories, item 2.

Agreements and spending

  • Lithuania — delayed US HIMARS delivery (context, dated 10 September): Chief of Defence General Raimundas Vaikšnoras told LRT that delivery of eight HIMARS (2022 contract, $495m; a second battery added in April 2026 for ~$280m), expected by end-2026, is slipping on the American side, probably due to industry load; crews are already trained and have live-fired; agreements exist to bring identical allied systems to Lithuania temporarily if deliveries are late. Some national-division infrastructure may be delayed, but full operational capability by 2030 is not at risk (defence minister R. Kaunas). Sources: LRT — US delivery of HIMARS delayed, says Lithuanian military chief; Anadolu — US delivery of HIMARS systems to Lithuania delayed: Military chief.
  • Poland ↔ Baltics — "Poland would be first to help" (context, 10 September): Kosiniak-Kamysz said that if the Baltic states were attacked he would ask the government and president for Poland to be the first to step in and invoke Article 5; an IBRiS poll for Radio ZET found 77.8% of Poles support helping the Baltics if Russia attacks, 16.1% against. Sources: Notes from Poland — Almost 80% of Poles support helping Baltic states if Russia attacks (10.09.2026); LRT — Poland would be 'first to step in' if Baltics attacked, says Warsaw.
  • Sweden — parliamentary election on 13 September (structural context): the outcome was unknown at build time; per Euronews and AP, defence policy was barely contested in the campaign — all eight parliamentary parties backed the financing framework for the defence build-up (3.5% of GDP in core defence spending by 2030), and the consensus on NATO and support for Ukraine holds under any government. For the Baltic theatre this is a predictability factor, not a change. Source: Euronews — Sweden heads to polls in close election race dominated by welfare state and security (08.09.2026).
  • Previously announced, unchanged (context): all three Baltic states at ~5% of GDP on defence (Lithuania 5.38%, €4.79bn for 2026; Latvia ~4.91%; Estonia 5.4%); Lithuania's constitutional initiative to lift the WMD ban passed a Seimas committee on 10 September and still needs two plenary readings (≥94 votes) and the president's signature.

Military aid and air defence / EW

  • Counter-UAS as a cross-cutting exercise theme (dated within the window): Strong Griffin 2026 and Namejs 2026 each train detection and neutralisation of drones; drones were also used in the Lithuanian territorial exercises of 10–13 September.
  • Poland's EP R134 zone (structural background, in force 10 September – 9 December): the airspace-restriction regime over eastern Poland (ceiling ~FL95, night flight ban with an exemption for military drones) ran through the window without new official clarifications, against the backdrop of NATO's year-old Eastern Sentry (launched 12 September 2025). Source: Poland Insight — Poland to Restrict Flights Along Eastern Border for Three Months (EP R134).
  • Lithuania — HIMARS: delivery delay — see Agreements and spending.

Kaliningrad and Russia's border regions

  • Kaliningrad Oblast — Kremlin statement (dated 13 September): D. Peskov — Russia "is taking the appropriate measures to ensure the security" of the region, in reply to Sikorski's call (see Top stories, item 1). No concrete military steps named. Source (direct link to a non-registry primary source): Vedomosti — Peskov: Russia will take measures for Kaliningrad's security (13.09.2026); Izvestia — EU-sanctioned outlet — no direct link.
  • Baltic Fleet (context, dated 10 September — outside the window): per the Kaliningrad outlet Novy Kaliningrad citing the fleet press service, scheduled exercises were held on 10 September on the sea ranges: the small air-cushion landing ships Yevgeny Kocheshkov and Mordovia fired 30 mm AK-630 mounts at simulated air targets and mock unmanned boats, and the anti-sabotage unit practised dives and detonated a training mine. A single departmental source, no independent confirmation; no fresh episode dated 12–13 September was identified. The same activity is covered by TASS — access blocked by Baltic regulators — no direct link. Source: Novy Kaliningrad — Firing on and under water: Baltic Fleet exercises on the sea ranges (10.09.2026).
  • Pskov and Leningrad regions, St Petersburg: in the Russian MoD summary for the night of 12 September (230 UAVs over 12 regions and the Azov and Black Sea waters) the Leningrad and Pskov regions were not listed; no military events dated 12–13 September were identified for these territories in open sources. Source (regional non-registry outlet): 47news — How many drones were downed over Russian regions on the night of 11–12 September 2026.
  • Context of Russian statements on Kaliningrad (outside the window): on 4 September SVR director S. Naryshkin, at a meeting of CIS security-service chiefs in Strelna, said NATO "is simulating a blockade of Kaliningrad Oblast" and that the groupings in the Leningrad region, the border districts and the Baltic Fleet "can prevent any aggression". Source: interfax.ru — SVR chief says Russia can prevent any aggression in the Baltic region (04.09.2026).
  • Belarus (Suwałki Gap area): the readiness check "up to mobilisation" continues (see Top stories, item 2). No large Russian–Belarusian exercise is announced for autumn 2026 (Zapad is quadrennial; last held 12–16 September 2025, next ~2029).

Statements by officials

  • Poland — R. Sikorski (11.09, resonance 12–13.09): call for "aggressive" NATO exercises near Kaliningrad; "No" to the question about seizing the oblast (see Top stories, item 1).
  • Russia — D. Peskov (13.09): "taking the appropriate measures to ensure the security" of Kaliningrad Oblast (see Top stories, item 1).
  • Belarus — A. Lukashenko (11.09): "The whole army. We'll check everyone. Up to mobilisation"; "preparing for war so that there won't be one"; "not going to attack anyone" (see Top stories, item 2).
  • Poland — W. Kosiniak-Kamysz, Land Forces Day (12 September): for the holiday the defence minister thanked soldiers, including those "standing on the border", and spoke of consistently strengthening the land forces (numbers, reconnaissance, artillery, armour and air-defence capabilities) towards "the strongest army in Europe". The ceremonial assembly was held at the Sobieski Palace in Wilanów; according to Interia the ceremony took place ahead of the holiday (on Thursday), so it is dated "on the occasion of 12 September". Sources: Polska Zbrojna — Konsekwentnie wzmacniamy wojska lądowe; Interia — Święto Wojsk Lądowych. Władysław Kosiniak-Kamysz wspomniał o granicy.
  • Estonia — M. Herem (ERR interview, published in the window): in arms procurement "risks sometimes have to be taken", inaction is worse (see Top stories, item 3).
  • Lithuania — R. Vaikšnoras (10.09, context): the HIMARS delay is "entirely on the American side" (see Agreements and spending).

⚠️ Contradictions and discrepancies

  • Correction to the 12 September issue (entered in corrections.json): the section "Kaliningrad and Russia's border regions" stated that "no separate Belarusian military events dated within the window [11–12 September] were identified". This is incorrect: on 11 September A. Lukashenko, at the Obuz-Lesnovsky range, announced that the readiness check extends to "the whole army, up to mobilisation" (an artillery brigade and signals units are being checked; tank and motor-rifle units earlier). The event is confirmed by Kyiv Independent, Meduza and the official portal belarus.by (all 11.09). The 12 September score (4.3) is not recalculated retroactively; the factor is included in today's assessment (see below).
  • Addendum (not an error): R. Sikorski's remarks were made on 11 September, i.e. also within the previous issue's window, but were widely reported only on 12 September; the previous issue did not claim there were no Polish statements, so this is not entered in the corrections log — the episode is covered today together with the Kremlin's reply.
  • Discrepancy in dating Poland's Land Forces Day ceremony: Polska Zbrojna and Radio Maryja present Kosiniak-Kamysz's remarks as tied to 12 September; Interia writes that the Wilanów assembly took place "on Thursday". The issue presents the ceremony as "on the occasion of 12 September" without asserting the exact date; the content of the statements is unaffected.
  • Sikorski vs Peskov — a positional, not a factual, contradiction: Sikorski claims there are "practically no troops" in Kaliningrad Oblast (there is no independent open verification of the grouping's strength; this is one politician's assessment); the Kremlin replies that "measures are being taken" without disclosing them. Neither claim is presented as an established fact about numbers or redeployment.
  • Belarusian "mobilisation": Lukashenko's wording "up to mobilisation" refers to the scope of the check, not to a declared mobilisation; some headlines (including registry Russian outlets) present it as an "announcement of mobilisation". The issue keeps the primary source's exact wording.
  • Exercise edition/year check: there is no Zapad-2026; the current-year editions of Strong Griffin 2026, Namejs 2026 and Oak Projection are confirmed by national sources (LRT, LSM). The territorial exercises in Skuodas and Zarasai are confirmed by municipal notices dated 10–13 September 2026.
  • Earlier corrections remain in force: the shell contract — Datasel S.R.L. (05.09 entry); the phantom Zapad-2026 (11.08) and Ussisõnad-2026 (22.08) are not presented as drivers; the 1 September airspace incidents (02.09 entry) remain the last real brush against the contour.

📊 Escalation risk assessment (0–10): 4.4 / 10

Final score: 4.4 / 10. The level is raised relative to the previous issue (+0.1). The closest historical analogue is the routine-tense confrontation of the late Cold War (≈3–4), with a premium for the density of simultaneous allied exercises along the eastern border, the expanded readiness check of the Belarusian army and a markedly sharper rhetorical exchange over Kaliningrad; clearly below Able Archer 1983 (≈7) and the run-ups to 2008/2014 (≈6–7).

Drivers on the side of Russia and its ally (dated within or immediately before the window):

  • Belarusian army readiness check "up to mobilisation" (announced 11 September, continuing): real rather than rhetorical military activity in western Belarus (Obuz-Lesnovsky near Baranavichy; earlier the 51st Artillery Brigade), with units brought up to wartime strength. Mitigants: the check has been running to plan since the start of the year, no mobilisation has been declared, Minsk stresses non-aggression; there is no large Russian–Belarusian exercise this autumn.
  • Kremlin reply on Kaliningrad (13 September): "taking measures to ensure security" — a framework formula with no specifics; on its own it barely moves the score, but it marks that the Kaliningrad topic has shifted into a public exchange.
  • Background (not dated within the window): scheduled Baltic Fleet exercises (10 September — sea ranges), Naryshkin's "blockade simulation" remarks (4 September), the militarisation of Kaliningrad.

Drivers on the side of NATO and individual members:

  • Sikorski's call for "aggressive" NATO exercises near Kaliningrad (11 September, resonance 12–13): a direct proposal to use exercises as pressure on the Russian command — offensively toned rhetoric from the foreign minister of the eastern flank's largest state; softened by his own "No" on seizing the oblast and by the fact that this is a position, not a NATO decision.
  • Continuing density of allied exercises along the eastern border: Strong Griffin 2026 near the Belarusian border, Namejs 2026, the closing Oak Projection, territorial exercises in Lithuania — a defensive up-factor with an element of offensive training.
  • Poland — final phase of talks on a permanent US base (10–11 September), Poland's EP R134 zone, Lithuania's course towards lifting the WMD ban (10 September): structural signals of strengthened deterrence that Moscow reads as escalatory.

Mutual / structural factors:

  • Dense concentration of troops and equipment on both sides of the line (allied exercises on the western side; the Kaliningrad grouping, the Baltic Fleet and the Belarusian units under inspection on the eastern side).
  • Symmetric hardening of rhetoric over Kaliningrad (Naryshkin — the Lithuanian Seimas — Sikorski — Peskov) with no deconfliction channels — the cost of misinterpretation rises.
  • Governance turbulence in Estonia's defence ministry (vacant minister post, dismissal of the permanent secretary, moves towards a no-confidence vote) — a persisting structural up-factor on the "stability of governance" axis; no escalation in the window.
  • The HIMARS delay for Lithuania — a small "window of weakness" in long-range fires, partly closed by agreements on temporary deployment of allied systems.
  • Information and propaganda background on both sides.

Stabilisers (both sides):

  • Quiet kinetic Baltic air contour in the window: no violations, combat scrambles or intercepts recorded on 12–13 September.
  • Neither side has turned rhetoric into announced military steps: Sikorski speaks of exercises and denies seizure; Peskov of "measures" without specifics; Lukashenko of a check rather than mobilisation, with a non-aggression caveat.
  • Pre-announced, defensive character of allied exercises and EP R134; Lithuanian municipalities separately stress the routine nature of the territorial exercises.
  • No large Russian–Belarusian exercise in autumn 2026 (Zapad is quadrennial).
  • Institutional proceduralism of the Estonian crisis (parliamentary timetable 14–15 September) and Sweden's cross-party defence consensus on election day — predictability on the northern flank.
  • The established Eastern Sentry regime (a year in operation) reduces the likelihood of an uncontrolled reaction to drone incidents.

Rationale for the score: the level is raised by +0.1 to 4.4. The kinetic contour is quiet, which keeps the score from rising noticeably. The premium comes from two factors absent from the previous issue's calculation: (1) the confirmed and continuing expanded readiness check of the Belarusian army "up to mobilisation" — real military activity near Belarus's western border, albeit planned and without a declared mobilisation; (2) the shift of the Kaliningrad topic into a public "proposal of aggressive exercises ↔ promise of measures" exchange between Poland's foreign minister and the Kremlin. Both are softened by the parties' caveats and the absence of concrete steps, so the premium is minimal; the persisting structural up-factors (Estonian turbulence, exercise density, HIMARS) are unchanged.

Delta vs previous issue: ↑ (+0.1) — 4.3 (12 September) → 4.4 (13 September). Reason: the Belarusian readiness check "up to mobilisation" (missed yesterday) and the Sikorski ↔ Kremlin rhetorical exchange over Kaliningrad are added to the calculation; the quiet kinetic contour and the absence of announced military steps keep the rise within one tenth.

Disclaimer: this is an analytical assessment based on open sources, not a forecast.

Sources