Explosions have been reported across Ukraine, including in the cities of Kyiv, Odessa, Kharkiv and Mariupol, as well as the first casualties from the military attack.
Air raid sirens have sounded and a stay-at-home order has been issued in the Ukrainian capital of Kyiv. Ukraine's airspace has been closed to civilian flights and classified as a conflict zone.
Russian President Vladimir Putin announced the attack in an address early on Thursday, declaring that Russia was beginning a "special military operation" aiming for the "demilitarization" of Ukraine. NATO, the most powerful military alliance in the world, is set to deploy more troops to eastern Europe following the invasion, with western nations condemning the attack.
Russian military hardware moved across Crimea
Firefighters work on a fire on a building after bombings on the eastern Ukraine town of Chuguiv
Girls take refuge in a metro station in Kyiv
The body of a rocket stuck in an apartment after recent shelling on the northern outskirts of Kharkiv
Residents attempt to flee Kyiv
A Ukrainian serviceman rides atop a military vehicle in central Kyiv
People board a bus as they attempt to evacuate Kyiv
People queue at an ATM in Lviv after Russian President Vladimir Putin authorized the military operation
Police officers carry a serviceman on a stretcher in the town of Armyansk, northern Crimea.
Ukrainian servicemen get ready to repel an attack in Ukraine's Luhansk region
People flee from Ukraine at the Hungarian-Ukrainian border
Rescuers work at the crash site of the Ukrainian Armed Forces' Antonov aircraft
Military helicopters apparently Russian, fly over the outskirts of Kyiv, Ukraine
Russian servicemen ride on a truck to the Perekop checkpoint on the Ukrainian border.
Police officers detain a man during a protest against Russia's invasion of Ukraine in Moscow
President Biden convened a meeting of the National Security Council in the White House Situation Room
A column of army trucks approaches the Chongar checkpoint on the Ukrainian border
Cars sit at a standstill as people try to leave Kyiv
A Russian Ka-52 helicopter gunship is seen in the field after a forced landing outside Kyiv
FlightRadar24 website, an online flight tracker shows no aircrafts flying over Ukraine after the Russian attack
A man watches a coverage of the conflict between Russia and Ukraine displayed on televisions in Kolkata
Damaged radar, a vehicle and equipment are seen at a Ukrainian military facility outside Mariupol
A wounded woman is seen after an airstrike damaged an apartment complex in city of Chuhuiv
A person walks past luggage carts at Boryspil International Airport
Armoured vehicles move across the town of Armyansk