Ukraine, US and European officials met in Geneva to discuss the draft plan presented by Washington to end the nearly 4-year old conflict.

The president also took aim at former President Joe Biden, arguing that Putin only attacked Ukraine because Biden was president at the time.

One attack this past spring illustrates what investigators describe as Russia's strategy: On Palm Sunday, Russian missile strikes killed 35 civilians.

Sen. Mitch McConnell, a staunch supporter of Ukraine, has warned the proposal to end the war with Russia could come with consequences.

Officials say progress was made in urgent weekend talks on amending the U.S. peace proposal for Ukraine that many saw as favoring Russia. But the Kremlin on Monday said it hadn't seen the changes.

U.S. and Ukrainian officials sought to narrow the gaps between them on Monday over a plan to end the war in Ukraine, after agreeing to modify a U.S. proposal that Kyiv and its European allies saw as a Kremlin wish list.

Army Secretary Dan Driscoll was at the White House earlier this month and preparing for a trip to Kyiv to discuss drone technology when he received an unexpected assignment from President Donald Trump: push Ukraine to come back to the table for peace talks with the Russia — and do it fast.

A senior Ukrainian defense official told Business Insider that the Delta system has increased combat efficiency and decision-making speed.