blinken has said there are reports of possible russian war crimes and says washington may hit moscow with its biggest economic blow yet. we are talking to our european partners and allies to look at the prospect of banning the import of russian oil. >> here are other developments unfolding in the crisis. the united nations says more than 360 civilians are confirmed killed in ukraine and it concedes the real number is likely much higher. this ukrainian boy frightened and overwhelmed is one of at least a million refugees who have crossed into poland. we don't know anything else about his circumstances. i've gotten a lot of viewer messages about this little boy right here. and minutes ago senior u.s. defense officials estimated that russia has fired 600 missiles and 95% of its amassed combat power is now in ukraine.