Ukrainian President Volodymyr Zelenskiy spoke to U.S. Secretary of State Antony Blinken by phone on December 6 ahead of President Joe Biden's call with Russian President Vladimir Putin in which Biden is expected to issue a strong warning against a Russian invasion of Ukraine.
'Agreed to continue joint & concerted action. Grateful to U.S. strategic partners & allies for the continued support of our sovereignty & territorial integrity,' Zelenskiy said on Twitter.
Russia's troop buildup as well as Ukraine's efforts to join the NATO alliance are expected to top the agenda of the video call between Biden and Putin on December 7.
Biden will make clear to Putin that there will be 'very real costs' should Russia choose to proceed with military aggression against Ukraine, a White House official said in a background briefing call with reporters.
There 'will be genuine and meaningful and enduring costs to choosing to go forward," the official said.
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