A slight glim earp of hope today, john, in the sense there was a humanitarian corridor that apparently was opened around 2:00 p.m. reuters reporting they have talked to witnesses who have seen small convoys out of mariupol. cnn cannot independently verify that information and it s so hard to get information out of mariupol because so much of the communications infrastructure there has been destroyed during fighting over the last few weeks. anybody getting out of mariupol at this point would be some sort of a miracle given what we ve seen there and given how dire the situation is especially in and around the steel plant complex where the bulk of ukrainian resistance forces have hunkered down as they continue to fight with the russians and we know inside that steel plant complex hundreds of civilians right alongside there with the fighters, the people inside that steel plant complex, john, hoping to be evacuated, calling on a third party country like the united states or maybe turkey to