warning russia is increasing its use of long-range missiles and mobile -- mobile launches which have been hitting the port city of mariupol and hitting it hard. its mayor accusing russia of genocide, and launching a war against humanity. he says no aid has been able to reach the city for six days, and that some 400,000 people are being held hostage. the ukrainian emergency service building in mariupol was shelled on thursday. now, a day earlier, as we reported, a blast damaging a maternity and children's hospital, killing three people, setting off global condemnation. russia denying any responsibility, and has called the attack -- wait for it -- staged. well, after talks with his ukrainian counterpart, russia's foreign minister claiming the hospital had been taken over by ukrainian radicals, as he put it. yet, provided no evidence of that. >> translator: at the meeting of the u.n. security council, our