At least 16 people, including one child, were killed in a missile attack in the eastern Ukrainian city of Kostiantynivka. U.S. Secretary of State Anthony Blinken arrived in Kyiv on an unannounced visit to assess Ukraine's counteroffensive and signal continued U.S. support for Kyiv's efforts. Blinken and Ukrainian President Volodymyr Zelensky condemned the ongoing Russian aggression in eastern Ukraine and called on Russia to immediately cease its aggression and withdraw its forces from Ukraine.