WATCH: Zelenskyy confirms Ukraine hacked back after Russia's cyberattack of its emergency alert system

Ukraine President Volodymyr Zelenskyy confirmed in an interview with PBS News' Amna Nawaz that his country hacked Russia's emergency alert system after Russia seemingly attacked Ukraine's alert system overnight.

Ukraine President Volodymyr Zelenskyy confirmed in an interview with PBS News' Amna Nawaz that his country hacked Russia's emergency alert system after Russia seemingly attacked Ukraine's alert system overnight.