Russia attacked Kiev and Ukraine attacked Moscow.
Russia and Ukraine launched attacks on each other's capitals on Thursday morning, a day after the end of the peace talks in Abu Dhabi and on the eve of the trip of the American envoys to Moscow.
In the early hours of Thursday, explosions were heard in Kiev, the capital of Ukraine. Reports of possible damage and casualties have not yet been published.
The mayor of Moscow, Sergey Sobyanin, also said without giving further details that Russia shot down five drones that were heading towards Moscow.