so let's bring in glen coll, he's a former deputy national intelligence officer for trans national threats to the ca and joins of live now from boston. glenn, always good to happy with us on the program. i mean, as you know, the world of hostage diplomacy is always very secretive. what do you think changed that suddenly made the russians release crying? i'm do you think this is a fair trade, a basketball player for a convicted alms dealer? well, of course, you don't really know what has changed, but exchanges like this. you're part of the great game of seeking influence and intelligence work among we're between in this case to great states. so clearly the us and russia are at odds over the ukraine war over russia invasion of ukraine. and this can be a signal that the russia or washington or both wants to clear away one obstacle and to, to indicate that there is a possibility of, of continued back channel or dialogue. or certainly in the us side. it's an effort to eliminate one element of leverage for the russians to sort of bring america into the conflict and make it somehow against the u.