Trump said he and the Russian leader spoke last week about what they see as the problems with mail-in voting. Since then, Trump has pushed again for the U.S. to end the practice.

President Trump was joined in the Oval Office on Monday by Ukrainian President Volodymyr Zelenskyy and European leaders, just days after a face-to-face summit with Russian President Vladimir Putin.

U.S. President Donald Trump has interrupted his talks in Washington with European leaders to call Russian President Vladimir Putin, Germany's Bild newspaper reported on Monday.

Fiona Hill, who served as a Russia analyst on the National Security Council during Donald Trump ’s first term in office, said Sunday on CBS that Vladimir Putin’s decision to push baseless claims against mail-in voting during his summit with the U.S. president is a glaring “manipulation” tactic.

President Donald Trump said Monday during talks with Ukrainian President Volodymyr Zelenskyy and European leaders that a potential ceasefire and who gets Ukrainian territory seized by Russia

Russian President Vladimir Putin and U.S. President Donald Trump discussed the idea of "raising the level of representatives" at Ukraine talks in a 40-minute call following the U.S. leader's meeting with Ukrainian President Volodymyr Zelenskiy,

In the first lady’s “peace letter” to Putin, she told the Russian president that “it is time” to protect children and future generations worldwide.

Ahead of the multilateral meeting, President Donald Trump was caught on a hot mic saying that Russian President Vladimir Putin wants to reach a resolution to the war for him. CNN’s chief national affairs correspondent Jeff Zeleny reports.