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Zapad 2025 and the Belarus border question
Summary
A look back at how Poland and the United States took opposite approaches to Minsk as Russian–Belarusian drills began.
What did a closed border and a lifted sanction have in common on 13 September 2025? Both were responses to Belarus, taken within days of each other, and both shaped the backdrop to the Zapad 2025 exercise then under way.
The Russian–Belarusian joint strategic exercise ran in Belarus from 12 to 16 September 2025. Belarus said the drills would test the defensive readiness of the Union State, with main activities at central training areas near Barysaw and a reciprocal movement of units between the two states. Authorities described a scaled-down format, with locations deeper inside Belarus. It was the first Zapad exercise since Russia's full-scale invasion of Ukraine in 2022.
Warsaw hardens its line
On 11 September 2025, Poland closed its border with Belarus indefinitely and deployed 40,000 troops to it. Warsaw cited security concerns over the Russian–Belarusian military exercises near the region, the first of their kind since 2022.
Washington moves the other way
The same day, following the release of political prisoners, the United States lifted its sanctions on Belavia, the Belarusian flag carrier.
What the two moves show
The two decisions, announced on the same date, pointed in different directions. Poland framed its step as a response to security risks tied to the exercise. The US step followed the release of political prisoners. Together they showed that, as Zapad 2025 began, Belarus was being met with both military caution on its western frontier and a sanctions concession from Washington.
