U.S. Secretary of State John Kerry arrives at Lancaster House in London to attend the Small Group of the Global Coalition to Counter ISIL one day meeting, hosted by British foreign secretary Philip Hammond.

RMG7KBHK–U.S. Secretary of State John Kerry arrives at Lancaster House in London to attend the Small Group of the Global Coalition to Counter ISIL one day meeting, hosted by British foreign secretary Philip Hammond.

Chinese Premiere Li Keqiang greets U.S. Secretary of State John Kerry at a meeting at the Ziguangge Purple Chamber at the Zhongnanhai Leadership Compound in Beijing, China on February 14, 2014

RM2K0ADC6–Chinese Premiere Li Keqiang greets U.S. Secretary of State John Kerry at a meeting at the Ziguangge Purple Chamber at the Zhongnanhai Leadership Compound in Beijing, China on February 14, 2014

U.S. Secretary State John Kerry, center, Jordanian Foreign Minister Nasser Judeh, right, and US Ambassador to Jordan Stuart Jones, left, sit in front of a map during a briefing at Zaatari refugee camp on Thursday, July 18, 2013 near the Jordanian city of Mafraq, some 8 kilometers from the Jordanian-Syrian border. Visiting the Zaatari refugee camp in northern Jordan, Kerry met six representatives of its 115,000-strong population, all of whom appealed to him to create no-fly zones and set up humanitarian safe havens inside Syria. The Obama administration has boosted assistance to the Syrian oppo

RM2P58GB2–U.S. Secretary State John Kerry, center, Jordanian Foreign Minister Nasser Judeh, right, and US Ambassador to Jordan Stuart Jones, left, sit in front of a map during a briefing at Zaatari refugee camp on Thursday, July 18, 2013 near the Jordanian city of Mafraq, some 8 kilometers from the Jordanian-Syrian border. Visiting the Zaatari refugee camp in northern Jordan, Kerry met six representatives of its 115,000-strong population, all of whom appealed to him to create no-fly zones and set up humanitarian safe havens inside Syria. The Obama administration has boosted assistance to the Syrian oppo

RMGEGXDE–Secretary of State John Kerry Meeting with Astronaut Scott Kelly 03240006

U.S Secretary of State John Kerry is reflected in the mirror during arrival ceremony for the Nordic leaders in the Grand Foyer of the White House May 13, 2016 in Washington, DC.

RMG1K6HT–U.S Secretary of State John Kerry is reflected in the mirror during arrival ceremony for the Nordic leaders in the Grand Foyer of the White House May 13, 2016 in Washington, DC.

Secretary of State John Kerry talks with National Security Advisor Susan E. Rice during the U.S.-Africa Leaders Summit at the U.S. Department of State in Washington, D.C., Aug. 6, 2014.

RFKKMR51–Secretary of State John Kerry talks with National Security Advisor Susan E. Rice during the U.S.-Africa Leaders Summit at the U.S. Department of State in Washington, D.C., Aug. 6, 2014.

Photograph of U.S. Secretary of State John Kerry, Rick Stengel and Evan Ryan taking a group photograph with alumni of the State Department's Bureau of Educational and Cultural Affairs programs, Palo Alto, California, 2016. Image courtesy US Department of State.

RMKW4PFC–Photograph of U.S. Secretary of State John Kerry, Rick Stengel and Evan Ryan taking a group photograph with alumni of the State Department's Bureau of Educational and Cultural Affairs programs, Palo Alto, California, 2016. Image courtesy US Department of State.

U.S. Secretary of State, John Kerry, right, meets with NASA astronaut Scott Kelly, center, and Russian cosmonaut Mikhail Kornienko of Roscosmos, left, to discuss their year aboard the International Space Station, Thursday, March 24, 2016, in Moscow, Russia. Kelly and Kornienko's year long mission is providing valuable data about how the human body adjusts to weightlessness and long-duration spaceflight, which will inform future human missions on the journey to Mars. Photo Credit: (NASA/AubreyGemignani) Secretary of State John Kerry Meeting with Astronaut Scott Kelly and Cosmonaut Mikhail Korni

RMKRME2C–U.S. Secretary of State, John Kerry, right, meets with NASA astronaut Scott Kelly, center, and Russian cosmonaut Mikhail Kornienko of Roscosmos, left, to discuss their year aboard the International Space Station, Thursday, March 24, 2016, in Moscow, Russia. Kelly and Kornienko's year long mission is providing valuable data about how the human body adjusts to weightlessness and long-duration spaceflight, which will inform future human missions on the journey to Mars. Photo Credit: (NASA/AubreyGemignani) Secretary of State John Kerry Meeting with Astronaut Scott Kelly and Cosmonaut Mikhail Korni

RMPHE267–U.S. Secretary of State John Kerry conducts a news conference at the U.S. Embassy in Tunis, Tunisia, on February 18, 2014.

RMG7KR7G–U.S. Secretary of State John Kerry speaks during a press conference at the Foreign and Commonwealth Office in London.

U.S. Secretary State John Kerry, center, walks with Zaatari refugee camp manager Killian Kleinschmidt, right, and Jordanian Foreign Minister Nasser Judeh, left, during a visit to Zaatari refugee camp on Thursday, July 18, 2013 near the Jordanian city of Mafraq, some 8 kilometers from the Jordanian-Syrian border. Visiting the Zaatari refugee camp in northern Jordan, Kerry met six representatives of its 115,000-strong population, all of whom appealed to him to create no-fly zones and set up humanitarian safe havens inside Syria. The Obama administration has boosted assistance to the Syrian oppos

RM2P58GA5–U.S. Secretary State John Kerry, center, walks with Zaatari refugee camp manager Killian Kleinschmidt, right, and Jordanian Foreign Minister Nasser Judeh, left, during a visit to Zaatari refugee camp on Thursday, July 18, 2013 near the Jordanian city of Mafraq, some 8 kilometers from the Jordanian-Syrian border. Visiting the Zaatari refugee camp in northern Jordan, Kerry met six representatives of its 115,000-strong population, all of whom appealed to him to create no-fly zones and set up humanitarian safe havens inside Syria. The Obama administration has boosted assistance to the Syrian oppos

RMGEGXDM–Secretary of State John Kerry Meeting with Astronaut Scott Kelly 03240007