U.S. President Barack Obama delivers a statement after meeting with the National Security Council at the State Department in Washington, February 25, 2016. Obama on Thursday expressed confidence that the United States would prevail in its fight against the Islamic State, but said that an end to the conflict in Syria would be key to dismantling the group. Standing next to the president (L-R), U.S. envoy to the international coalition against Islamic State Brett McGurk, U.S. Attorney General Loretta Lynch, U.S. Secretary of State John Kerry, U.S. Defense Secretary Ash Carter and Chaiman of the Joint Chiefs of Staff, United States Marine Corps General Joseph Dunford. REUTERS/Carlos Barria 

U.S. Secretary of State John Kerry (3rd L) sitting with U.S. Ambassador to Saudi Arabia Joseph Westphal (2nd L), meets with Saudi Deputy Crown Prince Mohammed bin Salman (2nd R) and Saudi Foreign Minister Adel al-Jubeir (R) at the Saudi King's farm in Riyadh, Saudi Arabia, January 23, 2016. REUTERS/Jacquelyn Martin/Pool 

US Secretary of State John Kerry holds up Joseph Kennedy's cane, which has been used by John F. Kennedy and Ted Kennedy, while talking about his broken leg during the 8th Lower Mekong Initiative Ministerial Meeting at the Putra World Trade Center August 5, 2015 in Kuala Lumpur, Malaysia. REUTERS/Brendan Smialowski/Pool 

US Secretary of State John Kerry holds up Joseph Kennedy's cane, which has been used by John F. Kennedy and Ted Kennedy, while talking about his broken leg during the 8th Lower Mekong Initiative Ministerial Meeting at the Putra World Trade Center August 5, 2015 in Kuala Lumpur, Malaysia. REUTERS/Brendan Smialowski/Pool 

U.S. Secretary of State John Kerry (R) puts his hand on Joseph Milano, owner of The Union Oyster House as Canadian Foreign Minister John Baird (C) looks on during a visit to the restaurant in Boston, Massachusetts January 31, 2015. Milano gave Kerry and Baird New England Patriots' caps. REUTERS/Gretchen Ertl (UNITED STATES - Tags: POLITICS) 

U.S. President Barack Obama (R) is joined by Vice President Joseph Biden (C) and Secretary of State John Kerry, as he makes a statement about the mass shooting in Paris, while in the Oval Office at the White House in Washington, January 7, 2015. Obama on Wednesday condemned the deadly shooting at a magazine office in Paris on Wednesday, calling it a terrorist attack against its ally, France. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS CRIME LAW) 

Saskatchewan Roughriders' Kerry Joseph (L) talks with Edmonton Eskimos' Matt Nichols after during their CFL football game in Regina, Saskatchewan November 8, 2014. REUTERS/Matt Smith (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders' Kerry Joseph warms up before their CFL football game against the Edmonton Eskimos in Regina, Saskatchewan November 8, 2014. REUTERS/Matt Smith (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders' Kerry Joseph celebrates after scoring a touchdown during the first half of their CFL football game against the Edmonton Eskimos in Regina, Saskatchewan November 8, 2014. REUTERS/Matt Smith (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders' Kerry Joseph (5) hands the ball off to Steven Miller during the first half of their CFL football game against the Edmonton Eskimos in Regina, Saskatchewan November 8, 2014. REUTERS/Matt Smith (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders' Kerry Joseph (5) pushes past the Edmonton Eskimos defence for a touchdown during the first half of their CFL football game in Regina, Saskatchewan November 8, 2014. REUTERS/Matt Smith (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders quarterback Kerry Joseph (L) gets tackled while making the pass by Edmonton Eskimos defensive end Odell Willis during the second half of their CFL football game in Regina, Saskatchewan October 19, 2014. The Eskimos won the game 24-19. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders quarterback Kerry Joseph makes a pass while playing the Edmonton Eskimos during the second half of their CFL football game in Regina, Saskatchewan October 19, 2014. The Eskimos won the game 24-19. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders quarterback Kerry Joseph (L) hands off the ball to running back Jerome Messam while playing against Edmonton Eskimos during the second half of their CFL football game in Regina, Saskatchewan October 19, 2014. The Eskimos won the game 24-19. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders quarterback Kerry Joseph (5) gets tackled on the play by Edmonton Eskimos linebacker JC Sherritt during the first half of their CFL football game in Regina, Saskatchewan October 19, 2014. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders quarterback Kerry Joseph looks to make the pass while playing against the Edmonton Eskimos during the first half of their CFL football game in Regina, Saskatchewan October 19, 2014. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL) 

U.S. Secretary of State John Kerry (C) talks with Joseph W. Westphal (R), U.S. Ambassador to Saudi Arabia, before boarding his plane at King Abdulaziz International Airport in Jeddah September 12, 2014. Kerry announced on Friday nearly $500 million in humanitarian aid for people and countries hit by Syria's civil war. The aid package includes more than $250 million "to assist refugees and host communities in the neighbouring countries affected by the crisis," Kerry said in a statement. REUTERS/Brendan Smialowski/Pool (REUTERS - Tags: POLITICS CIVIL UNREST CONFLICT) 

(Front L-R) U.S. Secretary of State John Kerry, Saudi Arabia's Foreign Minister Prince Saud al-Faisal and U.S. Ambassador to Saudi Arabia Joseph W. Westphal walk together upon Kerry's arrival at King Abdulaziz International Airport in Jeddah September 11, 2014. Kerry will press Arab leaders on Thursday to support President Barack Obama's plans for a new military campaign against Islamic State militants including help with greater overflight rights for U.S. warplanes. REUTERS/Brendan Smialowski/Pool (SAUDI ARABIA - Tags: POLITICS) 

U.S. Secretary of State John Kerry (R) meets with President of the Democratic Republic of Congo Joseph Kabila at the State Department in Washington, August 4, 2014. REUTERS/Yuri Gripas (UNITED STATES - Tags: POLITICS) 

U.S. Secretary of State John Kerry (L) meets with President of the Democratic Republic of Congo Joseph Kabila at the State Department in Washington, August 4, 2014. REUTERS/Yuri Gripas (UNITED STATES - Tags: POLITICS) 

(L-R) U.S. Ambassador to Saudi Arabia Joseph Westphal and U.S. Secretary of State John Kerry walk with Saudi Foreign Minister Prince Saud al-Faisal after arriving at King Abdulaziz International Airport in Jeddah June 27, 2014. REUTERS/Brendan Smialowski/Pool (SAUDI ARABIA - Tags: POLITICS) 

U.S. Ambassador to Saudi Arabia Joseph Westphal (L) looks on as Saudi Foreign Minister Prince Saud al-Faisal (R) speaks with U.S. Secretary of State John Kerry during a tea ceremony at King Abdulaziz International Airport in Jeddah June 27, 2014. REUTERS/Brendan Smialowski/Pool (SAUDI ARABIA - Tags: POLITICS) 

U.S. Secretary of State John Kerry (2nd R) visits an operating room alongside Hospital Director Dolores Nembunzu (R) at the Fistula Clinic at Saint Joseph's Hospital, funded by USAID, in Kinshasa, May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry (C) walks alongside Hospital Director Dolores Nembunzu (R) and Sister Mary Joseph (L) at the Fistula Clinic at Saint Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

Hospital workers and security watch as U.S. Secretary of State John Kerry tours the Fistula Clinic at Saint Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry greets a surgeon as he visits an operating room at the Fistula Clinic at Saint Joseph's Hospital, funded by USAID, in Kinshasa, May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry (C) speaks beside Hospital Director Dolores Nembunzu (L) and Sister Mary Joseph (R) at the Fistula Clinic at Saint Joseph's Hospital, funded by USAID, in Kinshasa, May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

US Secretary of State John Kerry (L) talks with patients alongside Hospital Director Dolores Nembunzu (C) at the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry visits the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry (R) speaks to hospital staff after visiting the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry talks with patients at the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry talks with patients alongside Sister Mary Joseph (L) at the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGOPOLITICS HEALTH) 

U.S. Secretary of State John Kerry waves to hospital staff after visiting the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry walks with Hospital Director Dolores Nembunzu (R) and Sister Mary Joseph (L) past patients at the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGOPOLITICS HEALTH) 

U.S. Secretary of State John Kerry visits an operating room with Hospital Director Dolores Nembunzu (2nd R) and Sister Mary Joseph (R) at the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa, May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGOPOLITICS HEALTH) 

U.S. Secretary of State John Kerry visits patients at the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry visits an operating room with hospital director Dolores Nembunzu (2nd R) and Sister Mary Joseph (R) at the Fistula Clinic at St. Joseph's Hospital, funded by USAID, in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

U.S. Secretary of State John Kerry speaks with Hospital Director Dolores Nembunzu (L) and Sister Mary Joseph (R) as he visits patients at the Fistula Clinic at Saint Joseph's Hospital, funded by USAID, in Kinshasa, Democratic Republic of Congo, May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS HEALTH) 

President of the Democratic Republic of Congo (DRC) Joseph Kabila (R) meets U.S. Secretary of State John Kerry at the Palais de la Nation in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS) 

President of the Democratic Republic of Congo (DRC) Joseph Kabila (R) listens to U.S. Secretary of State John Kerry at the Palais de la Nation in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS) 

President of the Democratic Republic of Congo (DRC) Joseph Kabila (R) speaks with U.S. Secretary of State John Kerry at the Palais de la Nation in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS) 

President of the Democratic Republic of Congo (DRC) Joseph Kabila (R) welcomes U.S. Secretary of State John Kerry at the Palais de la Nation in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS) 

President of the Democratic Republic of Congo (DRC) Joseph Kabila (R) speaks with U.S. Secretary of State John Kerry at the Palais de la Nation in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS) 

President of the Democratic Republic of Congo (DRC) Joseph Kabila (R) meets U.S. Secretary of State John Kerry at the Palais de la Nation in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS) 

President of the Democratic Republic of Congo (DRC) Joseph Kabila (R) welcomes U.S. Secretary of State John Kerry at the Palais de la Nation in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS) 

President of the Democratic Republic of Congo (DRC) Joseph Kabila (R) welcomes U.S. Secretary of State John Kerry at the Palais de la Nation in Kinshasa May 4, 2014. REUTERS/Saul Loeb/Pool (DEMOCRATIC REPUBLIC OF CONGO - Tags: POLITICS) 

Edmonton Eskimos quarterback Kerry Joseph scrambles after the ball with teammate Edmonton Eskimos offensive lineman Tyrone Novikoff after it was stripped from his arms by Saskatchewan Roughriders defensive end Alex Hall (not pictured) during the second half of their CFL football game in Regina, Saskatchewan November 2, 2013. The Eskimos won the game 30-26. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL) 

Edmonton Eskimos quarterback Kerry Joseph scrambles after the ball with teammate Edmonton Eskimos offensive lineman Tyrone Novikoff after it was stripped from his arms by Saskatchewan Roughriders defensive end Alex Hall (not pictured) during the second half of their CFL football game in Regina, Saskatchewan November 2, 2013. The Eskimos won the game 30-26. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL) 

Edmonton Eskimos quarterback Kerry Joseph looks to make the pass while playing the Saskatchewan Roughriders during the second half of their CFL football game in Regina, Saskatchewan November 2, 2013. The Eskimos won the game 30-26. REUTERS/David Stobbe (CANADA - Tags: SPORT FOOTBALL) 

Saskatchewan Roughriders quarterback Darian Durant (R) talks with Edmonton Eskimos quarterback Kerry Joseph at the end of their CFL football game in Regina, Saskatchewan October 12, 2013. The Saskatchewan Roughriders defeated the Edmonton Eskimos 14-9. REUTERS/Matt Smith (CANADA - Tags: SPORT FOOTBALL) 

Malaysian Prime Minister Najib Razak (L) gestures to mimic the Petronas Twin Towers, seen in the background, with U.S. Secretary of State John Kerry (2nd L), U.S. Secretary of Commerce Penny Pritzker and U.S. Ambassador to Malaysia Joseph Yun (R) at an innovators event during the Global Entrepreneurship Summit at the Kuala Lumpur Convention Centre in Kuala Lumpur, October 11, 2013. REUTERS/Jacquelyn Martin/Pool (MALAYSIA - Tags: POLITICS) 

U.S. Secretary of State John Kerry (C) walks near U.S. Ambassador to Malaysia Joseph Y. Yun (L) as Kerry arrives for his meet-and-greet session with U.S. embassy employees in Kuala Lumpur October 10, 2013. Kerry is in Malaysia to meet with Malaysian officials and attend the Global Entrepreneurship Summit. REUTERS/Jacquelyn Martin/Pool (MALAYSIA - Tags: POLITICS) 

Secretary of State John Kerry shakes hands with Democratic Republic of Congo President Joseph Kabila during the United Nations General Assembly at the Palace Hotel in New York September 24, 2013. REUTERS/Joshua Lott (UNITED STATES - Tags: POLITICS) 

Secretary of State John Kerry shakes hands with Democratic Republic of Congo President Joseph Kabila during the United Nations General Assembly at the Palace Hotel in New York September 24, 2013. REUTERS/Joshua Lott (UNITED STATES - Tags: POLITICS) 

U.S. Secretary of State John Kerry (C) escorts Afghan President Hamid Karzai (2nd L) to a meeting in Brussels April 24, 2013. Kerry hosted the meeting on Wednesday with the aim of calming tension over border disputes and a flagging peace process, officials said. Also pictured are (from L-R): Afghan Defense Minister Bismillah Mohammadi, Pakistani Army Chief General Ashfhaq Parvez Kayani (partially obscured), Afghan Foreign Secretary Jalil Abbas Jilani, and U.S. General Joseph Dunford, commander of the International Security Assistance Force (ISAF) in Afghanistan. REUTERS/Evan Vucci/Pool (BELGIUM - Tags: POLITICS MILITARY) 

Edmonton Eskimos quarterback Kerry Joseph leaves the field after his team was defeated by the Toronto Argonauts during the East Division semi-final CFL football game in Toronto, November 11, 2012. REUTERS/Mark Blinch (CANADA - Tags: SPORT FOOTBALL)

Edmonton Eskimos quarterback Kerry Joseph looks on during play agianst the Toronto Argonauts during the second half of the East Division semi-final CFL football game in Toronto, November 11, 2012. REUTERS/Mark Blinch (CANADA - Tags: SPORT FOOTBALL)

Edmonton Eskimos quarterback Kerry Joseph (C) is consoled by Toronto Argonauts team chaplain Herbie Kuhn after his team was defeated during the East Division semi-final CFL football game in Toronto, November 11, 2012. REUTERS/Mark Blinch (CANADA - Tags: SPORT FOOTBALL)

Edmonton Eskimos quarterback Kerry Joseph (C) is consoled by Toronto Argonauts team chaplain Herbie Kuhn after his team was defeated during the East Division semi-final CFL football game in Toronto, November 11, 2012. REUTERS/Mark Blinch (CANADA - Tags: SPORT FOOTBALL)

Toronto Argonauts quarterback Ricky Ray (L) shakes hands with Edmonton Eskimos quarterback Kerry Joseph after the Argonauts defeated the Eskimos during the East Division semi-final CFL football game in Toronto, November 11, 2012. REUTERS/Mark Blinch (CANADA - Tags: SPORT FOOTBALL)