Ukraine, Russia agree on 6 evacuation corridors
b'The firing is meant to stop for 12 hours in certain areas, including the besieged city of Mariupol, whose deputy mayor tells CNN residents are melting snow for drinking water. While some refugees have made it out of the cities under attack, many remain trapped in worsening conditions. Clarissa Ward reports from Ukraine.\\nTo learn more about how CNN protects listener privacy, visit cnn.com/privacy\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'