Russian invasion of Ukraine
Minutes after Putin's announcement, explosions were heard in Kyiv, Kharkiv, Odessa and the Donbas. Ukrainian officials said that Russia landed soldiers in Odessa and Mariupol and launched cruise and ballistic missiles at airfields, military headquarters, and military depots in Kyiv, Kharkiv, and Dnipro. It is the largest attack by one country against another in Europe since World War II.