this in the past at least, dennis rodman has offered to be a mediator, if you like, between barack obama and kim jong-un, not something the u.s. government has taken him up on. but we don't really know whether or not he will actually be meeting with north korea's supreme commander. you would have to think that neither of these people would miss such an opportunity to get it out to the world what they're up to. >> they seem to like the photo ops. thank you so much. in other world news, a deadly day for u.s. forces in southern afghanistan, where six american troops have been killed. the pentagon is investigating whether they died in a helicopter crash or by enemy fire after their helicopter landed. according to two senior u.s. officials, it happened in southern afghanistan. one soldier did survive but sustained injuries. this is the single deadliest incident for u.s. troops since an august 2012 helicopter wreck that killed seven americans and four afghans. in 2013, 129 u.s. troops have lost their lives while supporting operation enduring freedom. don't hold your breath waiting for the u.s. to admit