As President Biden prepared to speak with President Vladimir V. Putin of Russia on Saturday in a bid to defuse the crisis over Ukraine, the State Department ordered all but a “core team” of its diplomats and employees to leave the American Embassy in Kyiv over fears that Moscow would soon mount a major assault.
A senior State Department official said on Saturday that the drawdown at the embassy, one of America’s largest in Europe, reflected the urgent need for American citizens to leave Ukraine immediately, because Washington has a limited ability to help them if the country becomes a “war zone.”
Several thousand Americans are believed to be in Ukraine, and the official told reporters that while diplomatic efforts to prevent war from breaking out were continuing, it appeared increasingly likely that the situation was headed toward some kind of active conflict. Russia’s large-scale military buildup surrounding Ukraine has prompted increasingly dire warnings from the Biden administration that Europe faces its gravest security crisis since the end of the Cold War.
U.S. intelligence officials had thought Mr. Putin was prepared to wait until the end of the Winter Olympics in Beijing before possibly ordering an offensive, to avoid antagonizing President Xi Jinping of China, a critical ally. In recent days, they say, the timeline began moving up, an acceleration that Biden administration officials began publicly acknowledging on Friday.
“We continue to see signs of Russian escalation, including new forces arriving at the Ukrainian border,” Jake Sullivan, the president’s national security adviser, told reporters, adding that an invasion could begin “during the Olympics,” which are scheduled to end on Feb. 20.
U.S. officials do not know whether Mr. Putin has decided to invade, Mr. Sullivan insisted. “We are ready either way,” he said. “Whatever happens next, the West is more united than it has been in years.”
The United States has picked up intelligence that Russia is discussing next Wednesday as the target date for the start of military action, officials said, acknowledging the possibility that mentioning a particular date could be part of a Russian disinformation effort.
The Ukrainian government urged calm, with President Volodymyr Zelensky saying that “too much information” about a possible Russian offensive was sowing unnecessary fear.
“We understand that these risks exist,” Mr. Zelensky told reporters. “If you or any person has additional information regarding a 100-percent-certain invasion, beginning on the 16th, by the Russian Federation into Ukraine, please give us this information.”
The combination of the Russian troop movements and the new information about a possible date helped to trigger a flurry of diplomatic activity and public warnings by the NATO allies on Friday.
The State Department said on Saturday that all nonemergency U.S. employees would depart the embassy in Kyiv, leaving only “a bare minimum” of American diplomats and Ukrainian staff members. Consular services at the embassy will be suspended starting on Sunday, the department said.
A small consular presence in Lviv, Ukraine, will be able to handle emergencies for U.S. citizens but will not be able to provide passport, visa or routine consular services, the State Department said.
The United States has ruled out sending troops to defend Ukraine but has increased deployments to NATO member countries in Eastern Europe, and on Friday the Pentagon ordered 3,000 more soldiers to Poland.
The White House is eager to avoid a repeat of the chaotic evacuation of the U.S. Embassy staff from Kabul last August as Afghanistan fell to the Taliban. The United States and countries including Britain, Denmark, Germany, Japan, Latvia and Norway have issued increasingly urgent calls for their citizens to leave Ukraine.
The State Department official emphasized on Saturday that the U.S. military would not be evacuating American citizens from Ukraine in the way troops did in Afghanistan.
Russia has accused Western countries of spreading misinformation about its intentions. On Saturday, its Foreign Ministry said it was pulling some of its diplomatic personnel out of Ukraine because it was “drawing the conclusion that our American and British colleagues seem to know about certain military actions.”