FILE - In this March 19, 1987 file photo, President Ronald Reagan taps his forehead at the White House while responding to a reporter's question during a news conference at which he said he never deliberately lied to the public, despite admitting to a misstatement about Israeli involvement in the Iran-Contra affair. In a 1986 radio address admitting to missteps in the Iran-Contra scandal, the president famously said "mistakes were made" - a passive acknowledgement of wrongdoing that didn't directly implicate anyone. (AP Photo/Dennis Cook, File)
Iran's Mehrdad Pooladi, left, holds Argentina's Lionel Messi during the group F World Cup soccer match between Argentina and Iran at the Mineirao Stadium in Belo Horizonte, Brazil, Saturday, June 21, 2014. (AP Photo/Martin Meissner)
Iranian President Hassan Rouhani gestures as he speaks during a press conference in Tehran, Iran, Saturday, June 14, 2014. Rouhani says the international sanctions regime has crumbled and will not be rebuilt even if Iran and world powers fail to reach a final nuclear deal by a July 20 deadline. Iran and the five permanent members of the U.N. Security Council plus Germany reached an interim deal in November that limited Iran's uranium enrichment program in exchange for the easing of some sanctions. (AP Photo/Vahid Salemi)
FILE - This Sept. 21, 2008, file photo shows Iranian basij paramilitary volunteers, affiliated to the elite Revolutionary Guard, attending a parade ceremony, marking the 28th anniversary of the onset of the Iran-Iraq war (1980-1988), in front of the mausoleum of the late revolutionary founder Ayatollah Ruhollah Khomeini, just outside Tehran, Iran.
In this picture released by the official website of the office of the Iranian supreme leader, Supreme Leader Ayatollah Ali Khamenei addresses in a ceremony marking 25th death anniversary of the late revolutionary founder Ayatollah Khomeini at his shrine just outside Tehran, Iran, Wednesday, June 4, 2014. (AP Photo/Office of the Iranian Supreme Leader)
Iranian President Hassan Rouhani waves as he arrives to deliver a speech during a ceremony marking the 25th death anniversary of Ayatollah Khomeini, the founder of the Islamic Republic, at his shrine just outside Tehran, Iran, Tuesday, June 3, 2014. Iran's moderate president said Tuesday that his administration will defend the Islamic Republic's nuclear rights and work to end international sanctions that have devastated its economy. (AP Photo/Vahid Salemi)
FILE – This Feb. 20, 2014, file photo shows Senate Veterans Affairs Committee Chairman Sen. Bernie Sanders, I-Vt., standing in defeat after a divided Senate derailed Democratic legislation providing $21 billion for medical, education and job-training benefits for the nation's veterans, as the bill fell victim to election-year disputes over spending and whether to slap sanctions on Iran on Capitol Hill in Washingtons. (AP Photo/J. Scott Applewhite)