Washington, February 17: US President Joe Biden on Thursday said that the threat of Russian invasion is "very high" as they have not moved any of their troops out. "The threat is very high-- because they have not moved any of their troops out," Biden said, adding that "We have reason to believe they're engaged in a false flag operation to have an excuse to go in."

"Every indication we have is they're prepared to go into Ukraine, attack Ukraine -- number one," Biden said. "Number two, I've been waiting for a response from Putin for my letter that -- my response to him. It's come to that Moscow embassy. They're faxing it here. Not faxing it, they're sending it here. I have not read it yet. I cannot comment on it," Biden added. Russia-Ukraine Crisis: India at UNSC Emphasises Quiet, Constructive Diplomacy, Backs Minsk Agreements.

US President said there is still "a diplomatic path". However, responding to a query whether he will call Putin, Biden said, "I've no plans to call Putin."

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