Unpredictable. the u.s. believes this is a key moment they have to provide this weaponry to ukraine, to sanction russia and essentially stop them for good. natasha bertrand, thank you for that reporting. cnn s scott mcclain is with us in lviv. we re hearing about heavy fighting in the east. what s the latest? that s right. ukrainian officials say that fighting has really become heavy in the eastern and the southern parts of the country. specifically in the donetsk and luhansk region. they say there has been heavy shelling across the front line. in kharkiv, there has been a build up of russian troops there trying to capture a strategic town which would allow them to move further west toward tra ma t t kramatorsk. perhaps the significant military development in the past 24 hours is a russian missile strike on a bridge south of odesa. the bridge is significant because it s the only road or