First lady Jill Biden meets with Olena Zelenskyy, spouse of Ukrainian's President Volodymyr Zelenskyy, at School 6, a public school that has taken in displaced students in Uzhhorod, Ukraine, Sunday, May 8, 2022. (AP Photo/Susan Walsh, Pool)

First lady Jill Biden receives flowers from Olena Zelenskyy, spouse of Ukrainian's President Volodymyr Zelenskyy, outside of School 6, a public school that has taken in displaced students in Uzhhorod, Ukraine, Sunday, May 8, 2022. (AP Photo/Susan Walsh, Pool)

First lady Jill Biden hugs Olena Zelenskyy, spouse of Ukrainian's President Volodymyr Zelenskyy, outside of School 6, a public school that has taken in displaced students in Uzhhorod, Ukraine, Sunday, May 8, 2022. (AP Photo/Susan Walsh, Pool)

First lady Jill Biden greets Olena Zelenskyy, spouse of Ukrainian's President Volodymyr Zelenskyy, outside of School 6, a public school that has taken in displaced students in Uzhhorod, Ukraine, Sunday, May 8, 2022. (AP Photo/Susan Walsh, Pool)

First lady Jill Biden greets Olena Zelenskyy, spouse of Ukrainian's President Volodymyr Zelenskyy, outside of School 6, a public school that has taken in displaced students in Uzhhorod, Ukraine, Sunday, May 8, 2022. (AP Photo/Susan Walsh, Pool)

First lady Jill Biden and Olena Zelenskyy, spouse of Ukrainian's President Volodymyr Zelenskyy, join a group of children at School 6 in making tissue-paper bears to give as Mother's Day gifts in Uzhhorod, Ukraine, Sunday, May 8, 2022. (AP Photo/Susan Walsh, Pool)

First lady Jill Biden hugs Olena Zelenska, spouse of Ukrainian's President Volodymyr Zelenskyy, outside of School 6, a public school that has taken in displaced students in Uzhhorod, Ukraine, Sunday, May 8, 2022. (AP Photo/Susan Walsh, Pool)