For more than a decade, the industrial heartland of eastern Ukraine has been the focal point of intense battles and diplomatic disputes between Kyiv and the Kremlin. Now it could be on the table in peace talks with the United States.

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 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.

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.

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.

Vladimir Putin hasn't made "a single concession" with respect to ending his war against Ukraine, retired Gen. Jack Keane said.