for dave darrell, she's a professor at the neary southeast asia center for strategic studies. and i for my major operations director, explain why the by the ministration made this decision. what we've seen is a pattern where the ukrainians ask for a certain type of weapons the by the administration denies the nice and then agrees . in this instance of course, the ukrainians have been saying, look in clark, even particular, we're seeing tactical operations being run out of russia into car keys, you know, firing artillery from car key that we cannot respond to with american weapons. and again, as with the provision of howitzers, an attack comes eventually divide with mr. she gets it. but there's another dynamic here which is the ukrainians with their own weapons, have been attacking rushes nuclear infrastructure, so they just damaged the crescent. adar, early warning radar with the domestic me pretty strong. that's very far within russia. early on this year they attacked the strategic bombing face in angles, air base, which was the heart of rushes up uh, airplane, and delivered