PHOTO GALLERY: Kyiv under attack as Russia invades Ukraine

A man sits next to his dogs on mattress in a hotel underground parking turned into a bomb shelter during an air raid alert in Kyiv, Ukraine, Sunday, Feb. 27, 2022. Terrified men, women and children sought safety inside and underground, and the government maintained a 39-hour curfew to keep people off the streets as more than 150,000 Ukrainians fled to neighboring countries and the United Nations warned the number could grow to 4 million if fighting escalates. (AP Photo/Vadim Ghirda)

A girl looks at a notebook next to her mother as they stand in the Kyiv subway, using it as a bomb shelter, in Ukraine, Saturday Feb. 26, 2022. (AP Photo/Emilio Morenatti)

People lie on mattresses in the underground parking lot of a hotel that has been turned into a bomb shelter during an air raid alert in Kyiv, Ukraine, Sunday, Feb. 27, 2022. Terrified men, women and children sought safety inside and underground, and the government maintained a 39-hour curfew to keep people off the streets as more than 150,000 Ukrainians fled to neighboring countries and the United Nations warned the number could grow to 4 million if fighting escalates. (AP Photo/Vadim Ghirda)

Civilian Members of a territorial defence unit fit their weapons to repel the Russian attacking forces in Kyiv, Ukraine, Saturday, Feb. 26, 2022. Russian troops stormed toward Ukraine's capital Saturday, and street fighting broke out as city officials urged residents to take shelter. (AP Photo/Mikhail Palinchak)

On 26 February 2026, fleeing violence in Ukraine, hundreds of people, including families with small children, try to cross into Romania at the Porubne-Siret border. UNICEF Spokesperson James Elter is on the ground, reporting on the situation. (UNICEF)

On 25 February 2022 in Kyiv, Ukraine, a view of an apartment building that was heavily damaged during ongoing military operations. (UNICEF)

A Ukrainian servicemen opens the door of a deactivated Russian military multiple rocket launcher on the outskirts of Kharkiv, Ukraine, Friday, Feb. 25, 2022. Russian troops bore down on Ukraine's capital Friday, with gunfire and explosions resonating ever closer to the government quarter, in an invasion of a democratic country that has fueled fears of wider war in Europe and triggered worldwide efforts to make Russia stop.  (AP Photo/Vadim Ghirda)

Volunteers work to make molotov cocktails in the basement of a bomb shelter on February 26, 2022 in Kyiv, Ukraine. Explosions and gunfire were reported around Kyiv on the second night of Russia's invasion of Ukraine, which has killed scores and prompted widespread condemnation from US and European leaders. (Chris McGrath/Getty Images)

On 25 February 2022 in Kyiv, Ukraine, a girl looks at the crater left by an explosion in front of an apartment building which was heavily damaged during ongoing military operations. (UNICEF)

On 25 February 2022 in Kyiv, Ukraine, a woman works to clear debris in her apartment after the the building was heavily damaged during ongoing military operations. (UNICEF)

A participant holds a placard reading "Go to hell Putin" during a demonstration in Mint Square against the Russian invasion of Ukraine. Russian troops launched the expected attack on Ukraine and entered the capital.  (Thomas Frey/picture alliance via Getty Images)

Civilian volunteers check their guns at a Territorial Defence unit registration office on February 26, 2022 in Kyiv, Ukraine. Explosions and gunfire were reported around Kyiv on the second night of Russia's invasion of Ukraine, which has killed scores and prompted widespread condemnation from US and European leaders. (Chris McGrath/Getty Images)

A civilian volunteer fixes his gun at a Territorial Defence unit registration office on February 26, 2022 in Kyiv, Ukraine. Explosions and gunfire were reported around Kyiv on the second night of Russia's invasion of Ukraine, which has killed scores and prompted widespread condemnation from US and European leaders. (Chris McGrath/Getty Images)

A Ukrainian soldier runs holding his weapon outside a military facility, in Kyiv, Ukraine, Saturday, Feb. 26, 2022. Russian troops stormed toward Ukraine's capital Saturday, and street fighting broke out as city officials urged residents to take shelter.  (AP Photo/Emilio Morenatti)

Medical specialists transport a woman, who was wounded in the shelling of an apartment building, to an ambulance, as her husband stands nearby, in Kyiv, Ukraine February 26, 2022 (REUTERS/Gleb Garanich)

An armed local resident carries a cat in a carrier and a fish in an aquarium, which he took out of an apartment building damaged by recent shelling in Kyiv, Ukraine February 26, 2022. (REUTERS/Mikhail Palinchak)

A volunteer, holding a rifle, protects a main road leading into Kyiv on February 25, 2022. (DANIEL LEAL/ AFP via Getty Images)

A soldier checks vehicles in Zhuliany neighborhood of Kyiv during Russia's invasion of Ukraine, on February 26, 2022.  (Aytac Unal/Anadolu Agency via Getty Images)

Ukraine's biggest national flag flies in Kyiv on February 26, 2022.  (GENYA SAVILOV/AFP via Getty Images)

An Ukrainian service member drinks a cup of tea as he patrol the empty road on west side of the Ukrainian capital of Kyiv in the morning of February 26, 2022 (DANIEL LEAL/AFP via Getty Images)

Ukrainian service members look for and collect unexploded shells after a fighting with Russian raiding group in the Ukrainian capital of Kyiv in the morning of February 26, 2022, according to Ukrainian service personnel at the scene.  (SERGEI SUPINSKY/AFP via Getty Images)

A Ukrainian soldier stands guard behind tires in Zhuliany neighborhood of Kyiv during Russia's invasion of Ukraine, on February 26, 2022.  (Aytac Unal/Anadolu Agency via Getty Images)

An armored vehicle drives along in Zhuliany neighborhood of Kyiv  during Russia's invasion of Ukraine (Aytac Unal/Anadolu Agency via Getty Images)

A car with a smashed window on February 26, 2022 in Kyiv, Ukraine. Explosions and gunfire were reported around Kyiv on the second night of Russia's invasion of Ukraine. (Anastasia Vlasova/Getty Images)

Firefighters work by a damaged apartment building in Kyiv which was hit by a recent shelling during Russia's invasion of Ukraine, on February 26, 2022 (Aytac Unal/Anadolu Agency via Getty Images)

  (Aytac Unal/Anadolu Agency via Getty Images)

People take cover as an air-raid siren sounds, near an apartment building damaged by recent shelling in Kyiv, Ukraine February 26, 2022.  (REUTERS/Gleb Garanich )

Surveillance footage shows a missile hitting a residential building in Kyiv, Ukraine, February 26, 2022, in this still image taken from a handout video.  ( Vitali Klitschko via Telegram/Handout )

Ukrainian soldiers take positions outside a military facility as two cars burn, in a street in Kyiv, Ukraine, Saturday, Feb. 26, 2022. Russian troops stormed toward Ukraine's capital Saturday, and street fighting broke out as city officials urged residents to take shelter.  (AP Photo/Emilio Morenatti)

Ukrainian soldiers take positions outside a military facility as two cars burn, in a street in Kyiv, Ukraine, Saturday, Feb. 26, 2022. (AP Photo/Emilio Morenatti)

A toy amongst the debris near an apartment building damaged following a rocket attack, in Kyiv, Ukraine, Saturday, Feb. 26, 2022. Russian troops stormed toward Ukraine's capital Saturday, and street fighting broke out as city officials urged residents to take shelter.  (AP Photo/Emilio Morenatti)

A soldier's helmet with a bullet hole near debris of burning military trucks, in a street in Kyiv, Ukraine, Saturday, Feb. 26, 2022. Russian troops stormed toward Ukraine's capital Saturday, and street fighting broke out as city officials urged residents to take shelter (AP Photo/Efrem Lukatsky)

A Ukrainian police officer detains a car driver in a street in Kyiv, Ukraine, Saturday, Feb. 26, 2022. Russian troops stormed toward Ukraine's capital Saturday, and street fighting broke out as city officials urged residents to take shelter.  (AP Photo/Efrem Lukatsky)

A Ukrainian soldier shows a grenade, near burning military trucks in a street in Kyiv, Ukraine, Saturday, Feb. 26, 2022. Russian troops stormed toward Ukraine's capital Saturday, and street fighting broke out as city officials urged residents to take shelter.  (AP Photo/Efrem Lukatsky)

Ukrainian soldiers take positions outside a military facility as two cars burn, in a street in Kyiv, Ukraine, Saturday, Feb. 26, 2022. Russian troops stormed toward Ukraine's capital Saturday, and street fighting broke out as city officials urged residents to take shelter.  (AP Photo/Emilio Morenatti)

Civil defense personnel man a checkpoint in Kyiv, Ukraine, Saturday, Feb. 26, 2022.  (AP Photo/Emilio Morenatti)