putin they believe in vengeful acts is firing on cities to extract pain and a higher price to the negotiations happening now. >> richard engel, what when we look at the human suffering and the indiscriminate bombing and make the point in the package clearly it was an attack on civilians. what have russians been able to do in mariupol been more difrlt than kyiv? >> so kyiv is a mariupol has about 400,000 and also right on the sea so it is easier to surround. the topography is that you can surround it by several sides. industrial areas that easy to cut off. it is close to the russian