Vladimir Putin and phone calls, it never leads to anything," U.S. Secretary of State Marco Rubio said. "So, the time has come for some action."

The two sides agreed to have a prisoner exchange of 1,200 people, National Security and Defense Council Secretary Rustem Umerov said.

President Donald Trump insisted Friday that a meeting between Russian President Vladimir Putin and Ukrainian President Volodymyr Zelensky “will happen," even as the Kremlin ruled out talks between the two leaders in the near term.