could take the entire city within 30 days after that. norah. >> o'donnell: chris livesay with all that new reporting. thank you. well, as the russian bombardment intensifies, the number of civilians fleeing ukraine to neighboring countries has reached nearly 700,000. the crowds getting so large, that the wait time at some checkpoints is now around five days. cbs' christina ruffini is at thh long, ld jouto pd it'setely danustodon't want stay here. >> reporter: the e.u. says four million people could be forced to flee. so we're on the ukrainian side of the medyka border crossing. all these people have been walking all night to get here, and they still have to wait to get into poland. at this receiving center a few miles away, volunteers from all over europe have come to offer