region, the russians control about 90% of that and what they are trying to do now is simply break through the other 10%, break through the ukrainian defense line. so we've seen an escalation in air power. and if they are successful, they will be able to essentially trap from three different directions the ukrainian defense forces, that is what they are trying to accomplish in the days ahead. >> and we'll see if they are successful. suzanne, of course so much questions about those ukrainian forces who have put up such a fierce resistance inside this steel plant. thank you so much. want to bring in military analyst retired air force dcedr. it seems that the ukrainians have stopped fighting, they have left by large the azovstal steel plant. what is the significance? >> the biggest strategic