the building. we are now told that two 2,000-pound bombs were fired against this it building in mosul at dawn yesterday. they do believe they destroyed the cash pile there. why that's so important, of course, is it takes away significant resource from isis for its operations. its ability to function as a state with all of those financial resources. how important was it? one official telling cnn the u.s. was willing to risk up o to 50 civilian casualties in this area to get the build iing, to destroy the building. at the end of the day after they dropped the bombs at dawn, they believe perhaps five to seven casualties. they tried to pick a time when there were the fewest number of people around, but a real signal that the u.s. is going after is isis's economic and financial targets to really try to cut its heart out. >> barbara starr, thank you for