# Russian military buildup and NATO response > Live situation record from CLSTR: https://clstr.news/situations/russian-military-buildup-and-nato-response > Updated: 2026-09-19T21:39:21.000Z. Sources: 9. Developments: 2. Russia has been increasing its military capabilities and presence near NATO borders. In early 2026, reports indicated an increase in combat aircraft production, including Su-35S and Su-57 models. Concurrently, Russia established an army corps command in Petrozavodsk, Karelia, which could signal a concentration of up to 15,000 soldiers near the Finnish border. This buildup prompted Finland to seek defensive support from Sweden. By autumn 2026, reports emerged that civilian hospitals in northwestern Russia were being prepared to provide between 16,000 and 20,000 additional beds for military use. Analysts have suggested this preparation could be for accommodating casualties from the war in Ukraine, preparing for escalation against NATO states, or serving as a strategic intimidation signal. In response to these regional tensions, Germany and Sweden have initiated the NATO exercise ‘Silver Wotan’ on the island of Gotland to secure Baltic Sea movement and supply lines. ## Timeline ### 2026-09-19: Russia prepares up to 20,000 hospital beds for military use Russia is reportedly preparing up to 20,000 additional hospital beds for military use by 2026, prompting security concerns regarding potential escalation against NATO or intimidation of the West. 6 sources. https://clstr.news/cluster/russia-prepares-up-to-20000-hospital-beds-for-military-use ### 2026-09-04: Russia increases military production and troop presence near NATO Russia is boosting military capacity by producing at least 14 combat aircraft in early 2026 and concentrating up to 15,000 troops near the Finnish border, prompting NATO flank reinforcements. 3 sources. https://clstr.news/cluster/russia-increases-military-production-and-troop-presence-near-nato --- Cite as: Russian military buildup and NATO response. CLSTR, https://clstr.news/situations/russian-military-buildup-and-nato-response