By VLADIMIR ISACHENKOV, YURAS KARMANAU and LORNE COOK, KYIV, Ukraine, Feb 17 (AP) — President Joe Biden said Thursday that there is a “very high” risk of a Russian invasion of Ukraine and that could happen within “several days.”

Speaking at the White House, Biden said the United States saw no signs of a claimed Russian withdrawal of forces along its border with Ukraine. He said the U.S. has “reason to believe” that Russia is “engaged in a false flag operation to have an excuse to go in.”

He told reporters in Washington: “Every indication we have is they’re prepared to go into Ukraine, attack Ukraine.”

THIS IS A BREAKING NEWS UPDATE. AP’s earlier story follows below.

KYIV, Ukraine (AP) — A U.S. Embassy spokesman told a Russian news agency Thursday that Russia has expelled the deputy chief of of the U.S. mission in Moscow.

No details were given of why Bart Gorman was expelled. The State Department confirmed the expulsion, calling it unprovoked.

The move comes amid heightened tensions between Russia and the U.S., fueled by fears that Moscow plans to invade Ukraine.

Spokesman Jason Rebholz told the state RIA Novosti news agency that Gorman was second in command in the U.S. Embassy in Moscow and had an open visa. He spent less than three years in Moscow, the report said.

THIS IS A BREAKING NEWS UPDATE. AP’s earlier story follows below.

KYIV, Ukraine (AP) — NATO allies accused Russia on Thursday of misleading the world with “disinformation” by saying it was returning some troops to bases, charging that Moscow has instead added as many as 7,000 more troops near its tense border with Ukraine.

Tensions also spiked Thursday along the line that separates Ukrainian forces from Russia-backed separatists in the country’s east, with the parties accusing each other of intensive shelling. Western fears resurged that Russia is planning to invade Ukraine, after weeks of East-West tensions that have threatened Europe’s post-Cold War balance of power.

The U.S. and its NATO partners said they had seen no sign yet of Russia’s promised troop withdrawal.

“We’ve seen some of those troops inch closer to that border. We see them fly in more combat and support aircraft,” U.S. Defense Secretary Lloyd Austin said at NATO headquarters in Brussels. “We see them sharpen their readiness in the Black Sea. We even see them stocking up their blood supplies. You don’t do these sort of things for no reason, and you certainly don’t do them if you’re getting ready to pack up and go home.”

Russia held out an offer of diplomacy, handing the U.S. a response Thursday to offers to engage in talks on limiting missile deployments in Europe, restrictions on military drills and other confidence-building measures.

As U.S. Secretary of State Antony Blinken headed to New York for the U.N. Security Council meeting and then Germany for the Munich Security Conference, Russia delivered its long-awaited responses to U.S. proposals on Ukraine and broader European security. A senior State Department official said the Russians had presented its response to U.S. Ambassador to Russia John Sullivan in Moscow.