The war is now in its fourth week. Overnight, Ukrainian President Volodymyr Zelenskyy accused the Kremlin of deliberately creating "a humanitarian catastrophe," but also appealed for Russian President Vladimir Putin to meet him for direct talks.The U.N.
migration agency says the fighting has displaced nearly 6.5 million people inside Ukraine, on top of the 3.2 million refugees who have already fled the country.
Ukraine says thousands have been killed.Here are some key things to know about the conflict:In city after city around Ukraine, hospitals, schools and buildings where people sought safety have been attacked.The Ukrainians announced Saturday that 10 humanitarian corridors have been agreed on with the Russians — one from Mariupol, several in the Kyiv region, and several in the Luhansk region.
Humanitarian aid deliveries are also planned for the city of Kherson, currently under Russian control.Evacuation of civilians from secure corridors continues in Mariupol, Ukraine on March 18, 2022.