>> richard engel on the ground for us in kyiv. really appreciate you. let me bring in my two guests together, if you will, sort of obviously the same larger topic, but specific focused reach. former ambassador to poland, daniel freeh and also with us as i said andrea kendall taylor. ambassador, let me start with you. you signed on to the letter about limited no-fly zone. explain the difference between a limited no-fly zone, that's for humanitarian efforts -- how do you prevent that from cascading into the fears of world war iii that folks have if you decided to have a full no-fly zone over the entire country? >> i understand the white house's concerns. there is a danger of confrontation between the u.s. and russia in or over ukraine. so, the white house is not dumb