However, Vice President Harris insisted there would be “severe consequences” for Vladimir Putin if he decided to invade Ukraine when speaking to reporters.
She said: “The bottom line is that we have been clear and consistent for some time that we respect the territorial integrity and sovereignty of Ukraine.
“We expect that Russia would do the same and any aggressive action taken by Vladimir Putin will be met with severe consequences.
“The ball is in his court.
“I can’t tell you what he is going to do but we are prepared to take decisive actions if he moves in an aggressive manner in Ukraine.”
Vice President Harris also insisted that the Biden administration was in constant communication with key US allies.
She said: “I am being briefed on a constant basis by my national security team.
“As you know the President, I and other members of our administration have been in active discussion with our allies and partners across the globe, in particular in Europe.”
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Around 8,500 US troops have been put on heightened alert for possible deployment to Ukraine to boost NATO forces.