The presidents of the United States and Russia, Joe Biden and Vladimir Putin, plan to talk over the phone amid continuing military tensions over Ukraine.

Kremlin spokesperson Dmitry Peskov told a Russian news agency that the two leaders plan to have a phone conversation on Saturday.

Peskov said, "The request was preceded by a letter from the US side."

White House National Security Advisor Jake Sullivan said at a news conference on Friday that he was expecting President Biden to engage with President Putin by telephone. But he gave no further details.