Craig supervised Alex van der Zwaan, who has pleaded guilty to lying about communications regarding his work for Ukrainian politicians. Former Obama White House counsel Gregory Craig has left his law firm, Skadden, Arps, Slate, Meagher & Flom, the firm told NBC News. His departure comes after he and his law firm became caught up in special counsel Robert Mueller's investigation into possible collusion between the Trump campaign and Russia. Alex van der Zwaan, who had been a lawyer in Skadden's London office, pleaded guilty to lying to prosecutors and the FBI about communications involving work the firm had been...