The United Kingdom says it and NATO allies monitor Russian military developments while construction continues on a radar facility in Kaliningrad, a Baltic exclave near alliance territory.
In a written answer published Oct. 26, the UK Ministry of Defence said work on the facility had been in progress for some time. It said Britain and NATO partners track related Russian military activity and exchange assessments where appropriate; the response offered no model or technical specifications.
Lithuania’s 2026 National Threat Assessment identifies the equipment as Russia’s 29B6 “Container” over-the-horizon radar. It places the project within Moscow’s longer-term military infrastructure buildup in the Baltic Sea region and describes construction spread across several Kaliningrad locations over multiple years. The assessment says the completed radar would broaden Russia’s ability to follow distant airspace and detect aircraft and missiles at very long ranges.
Frankfurter Allgemeine Zeitung (FAZ) reported Oct. 19 that ICEYE satellite imagery shows three antenna arrays in the area of Gvardeysk, with individual structures longer than 500 meters. The paper cited an unpublished ICEYE assessment for a potential detection span of about 900 to 3,000 kilometers. That figure does not appear in the Lithuanian assessment or UK response.
Kaliningrad sits between NATO members Poland and Lithuania on the Baltic Sea. Latvian geopolitical analyst Evija Djatkovica told DW the system could make it easier to detect low-flying objects and add to military competition between Russia and NATO.
On a related security issue, Reuters reported that Germany’s brigade in Lithuania planned to use electronic-warfare systems to collect information on military activity in Kaliningrad and Belarus.
The UK answer and Lithuanian assessment give no construction completion date and do not say the facility is operating.
