President Vladimir Putin said peace talks with Ukraine are “at a dead end” and vowed to continue Russia’s invasion as Kyiv accused Moscow of sabotaging the negotiations.

There’s been no word of progress for days in video-link peace talks after Ukraine accused Russian troops of carrying out war crimes including killing unarmed civilians in Bucha and other towns in the north. Western leaders have called for international investigations of the deaths.

In his first public comments on the alleged atrocities, Putin first compared them to U.S. attacks on cities like Raqqa in Syria and then called the Bucha claims “fake.”