Former U.S. attorney Preet Bharara tweeted on Friday that the only "rational move" for former national security adviser Mike Flynn is to cooperate with special counsel Robert Mueller. The tweet follows a NY Times report that Flynn's lawyers have cut ties with Trump's, possibly in order to cut a deal with Mueller.
"If you're dead to rights, flipping on others and cooperating with the prosecution is the only sane and rational move. Also, prosecutors accept cooperation only if you can provide 'substantial assistance.' Higher up in the food chain."