The Situation Room With Wolf Blitzer

Trump predicts impeachment fight could go to Supreme Court; Sources: House Democrats preparing new subpoenas in response to Trump's defiance of impeachment probe; Trump attacks Biden after the Democrat calls for the President's impeachment for first time; Republican anger at Trump grows as Turkey launches "sickening" attack on U.S. allies; Pence says he didn't discuss the Bidens with Ukraine President, has no objection to releasing transcripts of his own calls; Democrats plot new phase in impeachment push as Trump wages all-out war against probe; House Democrats weighing whether to hold formal vote to authorize impeachment probe amid Trump's stonewalling; Trump says Turkey's attack in Syria a "bad idea" despite paving the way for offensive by withdrawing U.S. troops; rump predicts ISIS fighters are "going to be escaping to Europe" if they're freed due to Turkish offensive; Sanders sends mixed signals about plans after heart attack, now says he "