Secretary of State Mike Pompeo is limiting U.S. diplomats' contact with Iranian opposition groups, according to a cable sent to all U.S. diplomatic outposts Tuesday. Pompeo’s order says diplomats should not meet with Mujahedeen-e-Khalq (MEK) or five other groups because it could damage the United States' chances to negotiate with Iran,... “Direct U.S. government engagement with these groups could prove counterproductive to our policy goal of seeking a comprehensive deal with the Iranian regime that addresses its destabilizing behavior,” the cable said, according to Bloomberg. It also added that these groups “try to engage U.S. officials regularly to gain at...