This is stated in the press service of the State Department.
“(They) discussed their close coordination side by side with NATO allies and European partners in response to the deeply disturbing ongoing Russian military buildup in and around Ukraine,” the statement said.
It is noted that Secretary of State Blinken confirmed that "further Russian aggression against Ukraine will lead to rapid, serious and coordinated consequences."
Earlier it was reported that the Chairman of the Committee of Chiefs of Staff of the US Armed Forces, General Mark Milli, discussed security in Eastern Europe with the Commander-in-Chief of the Armed Forces of Ukraine Valeriy Zaluzhny by phone.