U.N. Security Council to convene on Friday at Russia's request -diplomats

FILE PHOTO: First Deputy Permanent Representative of Russia to the United Nation Dmitry Polyanskiy speaks during a meeting of the United Nations Security Council at the 76th Session of the U.N. General Assembly in New York, U.S. September 23, 2021. John Minchillo/Pool via REUTERS

The United Nations Security Council will convene on Friday at Russia's request, diplomats said, to discuss Moscow's claims, presented without evidence, of U.S. "biological activities" in Ukraine, a move Washington described as gaslighting.

The meeting is expected to be in the morning.