TEHRAN, IRAN - FEBRUARY 26: Iran's Supreme Leader Ayatollah Seyyed Ali Khamenei casts the first ballot in key elections for Parliament and the Assembly of Experts in Tehran, Iran, on February 26, 2016. Mr. Khamenei called on Iranians to vote en masse to "ruin the hopes of the enemies." The vote is essentially a referendum on the agenda of centrist President Hassan Rouhani, whose allies are trying to ease the grip of hardliners over many levers of government. (Photo by Scott Peterson/Getty Images)