The Kremlin said Tuesday it would toughen its negotiating position in talks on ending the war in Ukraine after accusing Kyiv of attacking a Russian presidential residence — an allegation that Kyiv said was baseless and intended to prolong the conflict. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://www.tiktok.com/@cbcnews Subscribe to CBC News on Snapchat: