of mariupol, after being given security guarantees by both sides in the conflict, in the hope of getting residents out of the city. tens of thousands of people are trapped there, following weeks of russian bombardment. previous attempts to establish humanitarian corridors in south—eastern ukraine haven't worked because ceasefires didn't hold. from lviv, anna foster sent this report. this is what weeks of shelling has done to mariupol, which used to be home to 400,000 people. the red cross says its convoy is moving closer to those still trapped inside. but it didn't get permission to bring badly—needed humanitarian aid. victoria and her two children fled to this shelter in lviv from mariupol. they were hiding with hundreds of others in the theatre there when it was bombed. her two—year—old daughter anastasia was buried under the rubble. how did you escape from mariupol? translation: we were in a car