LONDON, ENGLAND - OCTOBER 11: Former US Secretary of State Hillary Clinton answers questions from Dr Robin Niblett at Chatham House on October 11, 2013 in London, England. Mrs Clinton has been awarded the Chatham House Prize in recognition of her contribution to international diplomacy as US Secretary of State and her work on behalf of gender equality and opportunities for women and girls. (Photo by Peter Macdiarmid/Getty Images)
NORTH LAS VEGAS, NV - AUGUST 18: Democratic presidential candidate and former U.S. Secretary of State Hillary Clinton answers questions from members of the media following a campaign stop at Dr. William U. Pearson Community Center on August 18, 2015 in North Las Vegas, Nevada. Earlier, more than 300 people attended a town hall where she touted her college affordability plan. (Photo by Isaac Brekken/Getty Images)
US Secretary of State Hillary Clinton answers a question during a Turkish television special “Coffee Break with Hillary Clinton,” moderated by Sirin Payzin (R), on CNN-Turk at Ceyazin Cafe in Istanbul on July 16, 2011. Clinton said on July 16 that the United States was "concerned" about media freedom and free speech in Turkey amid the arrest of dozens of journalists and restrictions on the internet.AFP PHOTO / POOL / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
WASHINGTON, DC - JANUARY 29: U.S. Secretary of State Hillary Clinton answers questions from students from around the world during a "Global Townterview" at the Newseum January 29, 2013 in Washington, DC. Clinton took questions from an international group of youths via satellite and social media including Twitter, Facebook and Skype in advance of her last day at the State Department Friday. (Photo by Chip Somodevilla/Getty Images)
WASHINGTON - MAY 27: U.S. Secretary of State Hillary Clinton answers questions about the Obama administration's national security strategy at the Brookings Institution May 27, 2010 in Washington, DC. Clinton addressed a variety of security topics, including the prevention of nuclear proliferation, terrorism, the use of military force, development and diplomacy. (Photo by Chip Somodevilla/Getty Images)
