US Secretary of State Marco Rubio said Washington remains prepared to mediate between Russia and Ukraine despite fresh Russian strikes on Kyiv, as renewed attacks underscored the fragile state of efforts to end the war.

Russian Foreign Minister Sergey Lavrov warned U.S. counterpart Marco Rubio on Sunday strikes on the Ukrainian capital Kyiv will continue.

Russia urged the United States to withdraw its personnel from the Ukrainian capital ahead of its upcoming assault on Kyiv.