President Donald Trump on Thursday appeared to offer a rationale for Ukraine to go on offense against Russia, notable rhetoric as the momentum around peace talks has stalled.

Trump sounded positive on Monday as he met with Ukrainian President Volodymyr Zelenskyy and European leaders at the White House, just two days after his summit with Russia's Vladimir Putin in Alaska. "I think President Putin will make peace. I think President Zelensky will make peace. We'll see if they can get along," Trump said.

U.S. President Donald Trump renewed a threat to impose sanctions on Russia on Friday if there is no progress toward a peaceful settlement in Ukraine in two weeks, showing frustration at Moscow a week after his meeting with Russian President Vladimir Putin in Alaska.