The Democratic National Committee (DNC) said in a court filing Friday that the London-based Maltese professor who told former Trump campaign adviser George Papadopoulos that Russia had "dirt" on Hillary Clinton may be dead. Joseph Mifsud vanished from the public eye late last year after his name surfaced in stories about the Russia investigation. The DNC, which is suing Russia, the Trump campaign, and WikiLeaks for interfering in the 2016 election, said that it believes that all the defendants in the case had been served with the complaint, “with the exception of Mifsud (who is missing and may be deceased).”...