this is cnn breaking news. march through ukraine has been slower than expected. there is growing fear that the kremlin is about to intensify the onslaught. minutes ago brittain s defense ministry said major cities like kharkiv and mariupol that are under siege remain in ukrainian hands, however. some local leaders say the cities are close to breaking point. a few hours ago a shell hit an oil depot in an airstrike north of kyiv. these satellite images from earlier this week show homes in the same city where that strike occurred with fire damage and kralters dotting nearby fields.