In Photos: Russia's Invasion of Ukraine, Feb. 28, 2022

Ukrainian police rush a traveler to the railway station terminal during an airstrike alarm in Kyiv, Feb. 28, 2022.

This satellite image provided by Maxar Technologies shows the northern end of a convoy at the southeast of Ivankiv, north west of Kyiv, Ukraine, Feb. 28, 2022.

People struggle on stairways after a last minute change of the departure platform for a Lviv bound train in Kyiv, Ukraine, Feb. 28, 2022.

Russian and Ukrainian officials take part in the talks in the Gomel region, Belarus, Feb. 28, 2022.

Russian President Vladimir Putin, right, leads a meeting on economic issues in Moscow, Feb. 28, 2022.

A woman with her son admitted to oncology walks down the stairs to take shelter in a basement used as a bomb shelter, while the sirens sound announcing new attacks, at the Okhmadet children's hospital in central Kyiv, Ukraine, Feb. 28, 2022.

A view of the cars which were destroyed by recent shelling in Kyiv outskirts, Ukraine, Feb. 28, 2022

People fleeing stand in a crowded underpass at a train station to catch a train to Poland, in Lviv, Ukraine, Feb. 28, 2022.

A woman looks at empty shelves of bread after the curfew was lifted as Russia's invasion of Ukraine continues, in Kyiv, Ukraine, Feb. 28, 2022.

Cars are stopped at a roadblock set by civil defensemen at a road leading to central Kyiv, Ukraine, Feb. 28, 2022.

Police officers check people from a suspicious car they stopped, as Russia's invasion of Ukraine continues, in Kyiv, Ukrain, Feb. 28, 2022.

A view shows destroyed Russian Army all-terrain infantry mobility vehicles Tigr-M (Tiger) on a road in Kharkiv, Ukraine, Feb. 28, 2022.

This photograph shows a view of a school destroyed by a fighting not far from the center of Ukrainian city of Kharkiv, located some 50 km from Ukrainian-Russian border, Feb. 28, 2022.

A destroyed armored vehicle is seen in front of a school which, according to local residents, was on fire after shelling, as Russia's invasion of Ukraine continues, in Kharkiv, Ukraine, Feb. 28, 2022.

A woman reacts to sirens sound announcing new attacks, outside a supermarket in central Kyiv, Ukraine, Feb. 28, 2022.

Refugees fleeing conflict in Ukraine warm up near a fire after arriving at the Medyka border crossing in Poland, Feb. 28, 2022.

People who have fled the Russian invasion in Ukraine wait to board a bus bound for a refugee center in Przemysl, in Medyka, Poland, Fe. 28, 2022.

Refugees fleeing the conflict from neighboring Ukraine try to stay warm at the Romanian-Ukrainian border, in Siret, Romania, Feb. 28, 2022.

Delegations stand for a moment of silence during an emergency session of the U.N. General Assembly, Feb. 28, 2022, at United Nations Headquarters in New York.

German Navy ships leave the harbor to reinforce the NATO contingent on the Baltic Sea, in Kiel, Germany, Feb. 28, 2022.

U.S. soldiers with military vehicles gather at a local airport in Arlamow, southeastern Poland, near the border with Ukraine, Feb. 28, 2022. President Vladimir Putin dramatically escalated East-West tensions by ordering Russian nuclear forces put on high alert.