warned that any strikes on russian soil will be met with a swift response. they are saying do not test russia s patience on this, but, of course, whoever is responsible for these, it continues to be a pattern that we ve seen over really the last two months or so. scott, appreciate it. keep us posted on the mariupol vark wags. very important. scott mclean there. now, the refugee crisis from this war is worsening by the day. the u.n. says almost 5 1/2 million people have now fled ukraine since the invasion began in late february. more than half of them are children. that is according to unicef. the vast majority of refugees continue to head west, with more than 3 million crossing into poland. i want to bring in james elder, spokesperson for unicef. very good morning to you, james. thanks for taking the time to speak to us. let me start if i could on the evacuations we re seeing from mariupol. finally we re getting a