The Embassy of the United States of America appealed to its citizens not to enter the territory of Ukraine, and to leave it immediately if they have not done so yet.

“The security situation throughout Ukraine continues to be violent and unpredictable due to ongoing military attacks by Russia, with active fighting in country and uncertain safety conditions. The U.S. Embassy urges U.S. citizens not to enter Ukraine and those in Ukraine to depart immediately using privately available ground transportation options if it is safe to do so. Avoid large gatherings and organized events as they may serve as Russian military targets anywhere in Ukraine, including its western regions.

If you hear a loud explosion or if sirens are activated, immediately seek cover. If in a home or a building, go to the lowest level of the structure with the fewest exterior walls, windows, and openings; close any doors and sit near an interior wall, away from any windows or openings.
If you are outdoors, immediately seek cover in a hardened structure; if that is not possible, lie down and cover your head with your hands.
Be aware that even if the incoming missile or drone is intercepted, falling debris represent a significant risk.
After the attack, stay away from any debris, and monitor major news outlets for official guidance.

The security situation throughout Ukraine is highly volatile, and conditions may deteriorate without warning. U.S. citizens should remain vigilant and take appropriate steps to increase their security awareness. Know the location of your closest shelter or protected space. In the event of mortar and/or rocket fire, follow instructions from local authorities and seek shelter immediately. If you feel your current location is no longer safe, you should carefully assess the potential risks involved in moving to a different location”, - reads the statement.