The US Embassy in Kyiv said it would stay closed on Wednesday after receiving a warning of a potentially significant Russian air attack on the Ukrainian capital.
The precautionary step came after Russian officials promised a response to President Joe Biden’s decision to let Ukraine strike targets on Russian soil with US-made missiles—a move that angered the Kremlin.

The war, which reached its 1,000-day milestone on Tuesday, has taken on a growing international dimension with the arrival of North Korean troops to help Russia on the battlefield—a development which US officials said prompted Biden’s policy shift. The US Embassy said it anticipated a quick return to regular operations.