we ll talk to late-night expert bill carter about the big-star exits and this week s up front and so much more. first, an epic struggle over the future of talking and tweeting. right now all stories lead back to elon musk. he s everywhere. one minute he s like the head of state holding a key meeting with brazil s president, the next like a teenage troll tweeting cruel emojis and memes. musk continues to say his original agreement to buy twitter is on hold. the company is saying the oppo opposite, arguing there s no such thing as on hold, they will forge ahead with the agreement despite musk s belated concerns on the platform. is musk like a student who failed to do his homework and now lashing out, saying it s everyone else s fault? at this time the ramifications for twitter and behind or global in nation. let s welcome in margaret sullivan, and from the post national correspondent philip bump disbunker checker khaya himm himmelman. good morning, everybody. is anybody belie