FILE - In this Dec. 31, 1977 file photo, U.S. President Jimmy Carter toasts Shah Mohammad Reza Pahlavi of Iran during a New Year's Eve dinner at Niavaran Palace in Tehran, Iran. This moment came ahead of Iran's Islamic Revolution that changed a stalwart U.S. ally into a regional adversary. Carter, a Democrat, ultimately would lose the 1980 U.S. election, held on the first anniversary of the hostage crisis, to Republican Ronald Reagan. (AP Photo, File)