Special Prosecutor Robert Mueller seeks documents on former national security adviser Michael Flynn

Robert Mueller, the special counsel investigating allegations of Russian interference in last year's presidential election, has asked for documents on Michael Flynn, the president's former national security adviser. The request, which was reported in the New York Times, is the first direct request from Mr Mueller's team for White House material. Details emerged a day after reports that Mr Mueller has convened a grand jury in Washington to participate in the probe, signalling the possibility that