cease-fire around five ukrainian cities, including this one, to allow people to get out through evacuation corridors. but according to local authorities, the humanitarian aid convoy that was heading from central ukraine down to mariupol was hit earlier today or at least was targeted earlier today, making it appear that that corridor at least was not -- was not functioning and people were not able to get out. ma mariupol, if it is taken by russian forces would allow russia to correct crimea to western russia, to create a land bridge that we've been talking about to control at least that stretch of land and possibly to occupy it and add it to what putin believes is russian land. anderson. >> we saw some of the images from the evacuation in sumy. what more do we know?