Why Poland reopened its Belarus border after the Zapad drills
A retrospective on Poland's decision, reported on 24 September 2025, to lift border closures imposed during Russian-led military exercises.
What prompted Poland to reopen its border with Belarus? On 25 September 2025, a day after the move was reported, the decision was still fresh: Warsaw had lifted the closures it imposed while Russia-led military exercises were under way, citing reduced security risks and economic considerations.
The closures were linked to Zapad 2025, a joint Russian-Belarusian strategic exercise held in Belarus on 12–16 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 countries.
The exercise was the first Zapad since Russia's full-scale invasion of Ukraine in 2022. Authorities described a scaled-down format, with locations deeper inside Belarus.
As reported at the time, Poland gave two reasons for reopening: the lower security risk once the exercises had ended, and the economic cost of keeping the frontier shut. The reopening therefore marked the end of a temporary measure tied to the drills, rather than a change in the wider relationship between the two neighbours.
