Russia's defence ministry released video footage on Wednesday of what it said was a downed drone at a briefing intended to show Ukraine tried this week to attack a presidential residence and challenge Kyiv's denials that such an attack took place.

Kyiv says Moscow has produced no evidence to support its allegations and that Russia invented the alleged attack to block progress at talks on ending the war in Ukraine. Officials in several Western countries have cast doubt on Russia's version of events and questioned whether there was any attack.