As Russia steps up its shelling of cities across Ukraine, the UN says 1.5 million people have now fled, the fastest-growing refugee crisis since World War II. Attempts to evacuate civilians from the besieged Ukrainian city of Mariupol have failed once again. Residents are without power or water.
Russia said on Monday it will open humanitarian corridors to allow the evacuation of civilians from several Ukrainian cities experiencing heavy fighting, including the capital Kyiv and the besieged port city of Mariupol.
