In a handout picture from the Ukrainian State Emergency Service, rescuers work at the crash site of a Ukrainian Armed Forces' Antonov aircraft, shot down in the Kyiv region.
TASS / GETTY IMAGES
A security booth knocked over at the Perekop checkpoint, connecting the Crimean peninsula to the Ukrainian mainland.
AFP
Ukrainian servicemen get ready to repel an attack in the Lugansk region.
GETTY IMAGES
A man shows the result of shelling by Russian troops in a residential area in Piatykhatky, Kharkiv, north-eastern Ukraine.
GETTY IMAGES
Bloodstains are seen on the stairs in a residential building following shelling in Piatykhatky.
GETTY IMAGES
Damage caused by shelling in Piatykhatky.
VICTORIA VOTA
Civilians shelter in a metro station in Kharkiv, Ukraine, in a photo taken by Victoria Vota. "We are trying to stay strong," she said.
AFP
Black smoke rises from a military airport in Chuhuiv, near the north-eastern city of Kharkiv.
AFP
A man sits outside a destroyed building in Chuhuiv, following bombings.
AFP
A rocket is embedded in a road after recent shelling on the outskirts of Kharkiv.
REUTERS
People wait in a traffic jam as they attempt to leave the city of Kharkiv.
GETTY IMAGES
Elsewhere in the country, another traffic jam forms as people try to leave the capital Kyiv.
GETTY IMAGES
Crowds attempt to evacuate the capital by bus.
REUTERS
Others queue at the border crossing between Ukraine and Poland, in an attempt to flee the country.
STATE BORDER GUARD SERVICE OF UKRAINE / PA MEDIA
A CCTV image issued by the State Border Guard Service of Ukraine reportedly shows Russian military vehicles moving across the border from Crimea into Ukraine.
AFP
Firefighters try to extinguish a fire after an airstrike hit an apartment complex in Chuhuiv.
ANADOLU AGENCY VIA GETTY IMAGES
The firefighters climbed through wreckage to rescue civilians.
ANADOLU AGENCY VIA GETTY IMAGES
A woman tends to her wounds after the airstrike.
REUTERS
Smoke is seen coming out of a military installation near the airport in the south-eastern city of Mariupol.
REUTERS
Ukrainian tanks move into Mariupol.
EPA / INTERIOR MINISTRY PRESS SERVICE
A handout photo from the Ukrainian Interior Ministry's press service shows the aftermath of an explosion at a military unit building in Kyiv.
AFP
Also in Kyiv, police and security personnel inspect the remains of a shell in a street.
AFP
People watch the police and security personnel work from behind a cordoned-off area.
ANADOLU AGENCY VIA GETTY IMAGES
Crowds gather at ATMs in the eastern city of Kramatorsk, as people try to withdraw money.
REUTERS
A Ukrainian military helicopter flies over a fuel station outside the city of Dnipro.
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