About 100 people were evacuated from Mariupol on Sunday, the last holdout, and the Ukrainian government said they would continue.

Belgorod is a city on the Russian side of the border that is home to Russian fuel depots and other facilities. The general staff of Ukraine's armed forces say they have identified the forces of Belarus.

The U.K.'s Ministry of Defense says that more than 25% of Russia's troops are likely to have been rendered useless.

Funeral workers carry the body of a person killed during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 28, 2022.

The body of a person killed during the conflict in Mariupol was carried by funeral workers.

Alexander Ermochenko.

Two explosions took place in the southern Russian city of Belgorod near the Ukrainian border, the region's governor wrote in a social media post.

There were no casualties or damage, according to Gladkov.

Russia is using Belgorod as a base for its operations in the war in Ukraine. In April, Moscow accused Ukraine of attacking a fuel depot with a helicopter after a fire broke out. Kyiv denied being involved.

There is a person namedNatasha Turak.

The general staff of the Ukrainian army wrote in an update Monday that there were military units from the Republic of Belarus in the border regions of Volyn and Polissya.

NBC did not verify the information.

Russia is using the Belarus-Ukraine border areas as a staging ground for thousands of its own troops, although it has not officially deployed its troops to fight alongside Russian forces in Ukraine.

In March, it was reported that hundreds of Belarusians had joined the fight against Russia.

There is a person namedNatasha Turak.

More than a quarter of the troops Russia committed to the war are likely to have been rendered useless, according to the U.K.'s Ministry of Defence.

At the start of the conflict, Russia committed over 120 battalion tactical groups, which made up 65 percent of its entire ground combat strength.

More than a quarter of these units have been rendered useless.

It will probably take years for Russia to reconstitute these forces.

There is a person namedNatasha Turak.

The first lady will travel to Slovakia and Romania this week, coming within miles of the Ukrainian border.

Biden is expected to meet with service members, embassy staff, senior officials, humanitarian aid workers and refugees during her trip.

The first lady's trip follows other visits to the region by high-level U.S. officials.

Christine Wang.

Nancy Pelosi said that more U.S. support for Ukraine is on the way.

In a statement, Pelosi said the Congressional delegation met with President Zelenskyy and appreciated his leadership and the courage of the Ukrainian people.

Pelosi said that the delegation went to Poland to send a message to the world that America stands with its NATO allies.

She said the delegation will be meeting with Poland's President and other senior officials to discuss how they can work together to support Ukraine.

Christine Wang.