A schoolbook lies near a school destroyed by a missile strike in the Donetsk region August 30. Russia’s invasion displaced 3 million children and caus

A schoolbook lies near a school destroyed by a missile strike in the Donetsk region August 30. Russia’s invasion displaced 3 million children and caused more than 2 million children to leave Ukraine between February and June, according to UNICEF. (© Anatolii Stepanov/AFP/Getty Images)