original goals. cities across ukraine reduced to ruins. this footage taken by a former student returning to his bombed-out school. and the moment a man found alive in the rubble of this government building. four u.s. marines killed in a deadly osprey aircraft crash during a large nato drill in northern norway. the extreme conditions in the arctic complicating the recovery and investigation. the humanitarian crisis growing increasingly desperate. over 3 million refugees fleeing ukraine. an estimated 6.5 million internally displaced sense the war began. pope francis meeting with ukrainian children in a roman hospital. the new warning of threats children face amid the chaos of war. a renewed push for the u.s. to take in more ukrainian refugees and the ways in which the u.s. is already helping. the urgent wildfire danger in texas. one sheriff s deputy killed as fires ravage communities, destroying at least 50 homes,
in just a few hours results will start coming in from today s republican triple-header caucuses in colorado, minnesota and a primary in missouri up for grabs. dozens of delegates, but perhaps more importantly momentum. the front-runner mitt romney s campaign is anticipating a potential setback as his rivals look for an opportunity. our jim acosta is in denver. reporter: we re going to turn around and look at this screen back here, because mitt romney will talk to us from his bus. reporter: with a snowstorm slowing him down, he ran about an hour later, so he skyped to the crowd, a sign that not everything was going his way on this caucus day. colorado has something to say about who our nominees will be, and i think i will be that nominee. a strategy memo was released. saying the campaign is anticipating possibly a loss. we expect our opponents to notch a few wins, too. the memo red cued newt gingrich s plans to boasting romney would triumph in the west, suggesting