The U.S. Embassy in Ukraine is urging Americans not to travel there and to “depart immediately” if they’re already in the country, amid Russia’s military invasion.

Americans are being encouraged to use commercial or private ground transportation to leave the country since Ukraine’s government has closed airspace to commercial flights.

Neighboring Moldova has also closed its airspace to commercial flights until March 4, due to Russia’s military operations in Ukraine, according to the State Department. The department has listed a number of specific land border crossings from Ukraine into Moldova, Poland, Romania, Hungary and Slovakia.

The Federal Aviation Administration on Thursday expanded the areas in Eastern Europe and Russia where U.S. airlines and U.S. commercial pilots cannot fly. The agency’s Notices to Air Missions now cover all of Ukraine, Belarus and a western portion of Russia, the FAA said in a statement. Military operations are not affected.

Until today, the FAA’s no-fly zone in the area applied only to an eastern region of Ukraine.

The FAA did not restrict flights into the U.S. from Russia, as the United Kingdom announced Thursday.The UK Civil Aviation Authority suspended Russian carrier Aeroflot’s permit “until further notice.”

“This means that Aeroflot will not be permitted to operate flights to or from the United Kingdom until further notice,” the agency said in a statement.

The State Department generally does not provide transportation during crises abroad, but may in some cases offer information on transportation options. A list of what it can and cannot do is available here. 

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U.S. citizens and permanent residents in Ukraine are encouraged to complete this form so the State Department can communicate with them directly and call 606-260-4379 (overseas) or email KyivACS@state.gov for assistance. 

A security alert issued by the embassy Thursday also urged Americans to follow local state of emergency measures, carry ID, ensure travel documents are valid and easily accessible, and monitor news. 

Additional practical safety measures like seeking cover at the sound of a blast and staying away from debris after an attack were prescribed in a separate alert.

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