Kaliningrad as a "bastion": Russia's A2/AD zone in the Baltic

What the "bastion" is armed with

Coastal anti-ship systems: Bal (Kh-35 missiles, ~260 km range) and Bastion-P (supersonic P-800 Oniks, ~300+ km) — covering much of the southern and central Baltic and threatening shipping to Polish and Lithuanian ports;
Iskander-M — ballistic and cruise missiles against land targets hundreds of kilometres away (Warsaw, Vilnius, Riga and Berlin are within reach);
Kalibr-armed corvettes — land-attack strikes out to ~1,500+ km;
layered air defense (S-400 and below) and electronic warfare assets, regularly blamed for GPS jamming over the Baltic.

Together this lets Russia threaten NATO's sea and air lines of communication in the region without crossing any border — a classic sea-denial strategy.

The bastion's limits

After Finland and Sweden joined NATO, the Baltic became almost an alliance "inland sea": the Baltic Fleet is geographically surrounded, its links to mainland Russia are vulnerable, and the exclave itself depends on transit through Lithuania and maritime resupply. Western analysts describe the fleet as "encircled and constrained"; the Russian side replies that "as long as Kaliningrad exists, the Baltic will not become NATO's inland sea."

Current activity

In 2026 the Baltic Fleet has regularly exercised its Bal and Bastion systems in coastal-defense scenarios (February, April, and June — as BALTOPS-2026 began). Moscow states that any encroachment on or blockade of the region will be treated as a direct attack on Russia; calls by some Baltic politicians to "strike Kaliningrad" drew criticism even within NATO.

Sources

This page is updated as daily digests are published.