First lady Jill Biden makes unannounced visit to Ukraine war zone, holds surprise Mother's Day meeting with Zelenskyy's wife

The first lady of the United States made a surprise visit to Ukraine on Sunday.

The Washington Post reported that Biden's visit to an active war zone was a rare visit from a spouse of a sitting US president.

The Associated Press reported that Biden crossed into western Ukrainian from Slovakia. She met Olena Zelenskyy, the wife of Ukrainian President Volodymyr Zelenskyy.

Biden told Zelenskyy that he wanted to come on Mother's Day.

Zelenskky thanked Biden for her courage, according to the Washington Post. Biden is the highest profile US official to enter since the beginning of the Russian invasion.

Zelenskyy told Biden that they understand what it takes for the U.S. first lady to come here during a war.

Biden is on a trip to eastern Europe. Her visit to Ukraine coincides with Russia's "Victory Day" on May 9, which commemorates the Soviet Union's victory over Nazi Germany in World War II.

The Post reported that there is growing concern that the attacks on Ukraine will increase, especially in eastern Ukraine, because of the anticipated announcement by Russian President Vladimir Putin on Monday.

According to the AP, Biden's trip is limited to western Ukraine.

Biden and Zelenskyy met at a school that was turned into a transitional home for Ukrainians fleeing the war in other parts of the country. The pair met with a group of kids who were making bears from tissue-paper to give as gifts.