FILE PHOTO - Florida Gov. Rick Scott speaks at a press conference about the Zika virus in Doral, Florida, U.S. August 4, 2016. REUTERS/Joe Skipper/File Photo

Republican presidential nominee Donald Trump speaks with flood victims outside Greenwell Springs Baptist Church in Central, Louisiana, U.S. August 19, 2016. REUTERS/Jonathan Bachman

U.S. Republican presidential candidate Donald Trump's campaign chair and convention manager Paul Manafort appears at a press conference at the Republican Convention in Cleveland, U.S., July 19, 2016. REUTERS/Carlo Allegri/File Photo

Spain's Socialist Party (PSOE) leader Pedro Sanchez speaks during a news conference at the Spanish parliament in Madrid, Spain, August 17, 2016. Picture taken August 17, 2016. REUTERS/Javier Barbancho

James Feigen of the U.S. poses with his silver medal at the men's 100m freestyle victory ceremony during the World Swimming Championships at the Sant Jordi arena in Barcelona August 1, 2013. REUTERS/Albert Gea/File Photo

A reveller takes part in a LGBT pride parade to mark Gaijatra Festival, also known as the festival of cows in Kathmandu, Nepal, August 19, 2016. REUTERS/Navesh Chitrakar

Indonesian Finance Minister Sri Mulyani Indrawati smiles during an interview with Reuters at Finance Ministry office in Jakarta, Indonesia, August 19, 2016. REUTERS/Beawiharta

Republican presidential nominee Donald Trump speaks at a campaign rally in Charlotte, North Carolina, U.S., August 18, 2016. REUTERS/Carlo Allegri

Republican presidential nominee Donald Trump leaves a campaign rally in Charlotte, North Carolina, U.S., August 18, 2016. REUTERS/Carlo Allegri

Dutch coach Martin Jol, coach of Egypt's Al Ahly, reacts during their African Champions League soccer match against Zambia's Zesco United at Army Stadium in Suez, Egypt August 12, 2016. Picture taken August 12, 2016. REUTERS/Amr Abdallah

Labour Party leader Jeremy Corbyn (L) and challenger Owen Smith debate in a hustings event of the Labour leadership campaign in Birmingham, Britain, August 18, 2016. REUTERS/Darren Staples

Republican presidential candidate Donald Trump speaks to police gathered at Fraternal Order of Police lodge during a campaign event in Statesville, North Carolina, U.S., August 18, 2016. REUTERS/Carlo Allegri

Philippine Secretary of Labour Silvestre Bello speaks to the media in Riyadh, Saudi Arabia August 17, 2016. Picture taken August 17, 2016.REUTERS/Faisal Al Nasser

Spanish acting Prime Minister Mariano Rajoy addresses the media during a news conference after his meeting with Ciudadanos party leader Albert Rivera (not pictured) at the Spanish Parliament in Madrid, Spain, August 18, 2016. REUTERS/Javier Barbancho

Former neo-Nazi Manuel Bauer is pictured close to Leipzig, Germany, July 21, 2016. Picture taken July 21, 2016. To match Insight GERMANY-NPD/ REUTERS/Hannibal Hanschke

Zambia's President Edgar Lungu attends a signing ceremony at the Elysee Palace in Paris, France, February 8, 2016. REUTERS/Philippe Wojazer/File Photo

Wahid Abdallah al Bursh, a Palestinian engineer with the United Nations Development Programme (UNDP) whom Israel's Shin Bet security agency said had confessed to being recruited in 2014 to help Hamas is seen before a court hearing at Beersheba District Court in southern Israel, August 18, 2016. REUTERS/Amir Cohen

Ping An Insurance Chief Financial Officer Jason Yao attends a news conference on the company's interim results in Hong Kong, China, August 18, 2016. REUTERS/Bobby Yip

Singapore's Olympic gold medallist swimmer Joseph Schooling speaks in Singapore, August 18, 2016. REUTERS/Edgar Su

Republican U.S. vice presidential candidate Mike Pence speaks during a town hall at the Henderson Convention Center in Henderson, Nevada August 17, 2016. REUTERS/David Becker

U.S. Democratic presidential nominee Hillary Clinton holds a rally at John Marshall High School in Cleveland, Ohio August 17, 2016. REUTERS/Mark Makela

U.S. Democratic presidential nominee Hillary Clinton holds a rally at John Marshall High School in Cleveland, Ohio August 17, 2016. REUTERS/Mark Makela

Venezuela's Interior and Justice Minister Nestor Reverol, attends an exercise to disable seized weapons in Caracas, Venezuela, August 17, 2016. REUTERS/Marco Bello

Campaign manager Kellyanne Conway for U.S. Republican presidential nominee Donald Trump speaks to the media at Trump Tower in the Manhattan borough of New York, U.S., August 17, 2016. REUTERS/Carlo Allegri

Campaign manager Kellyanne Conway for U.S. Republican presidential nominee Donald Trump speaks to the media at Trump Tower in the Manhattan borough of New York, U.S., August 17, 2016. REUTERS/Carlo Allegri

Leader of South Africa's Democratic Alliance (DA) Mmusi Maimane speaks during a media briefing in Sandton, South Africa August 17, 2016. REUTERS/Siphiwe Sibeko

Spain's Socialist Party (PSOE) leader Pedro Sanchez speaks during a news conference at the Spanish parliament in Madrid, Spain, August 17, 2016. REUTERS/Javier Barbancho

Spain's Socialist Party (PSOE) leader Pedro Sanchez speaks during a news conference at the Spanish parliament in Madrid, Spain, August 17, 2016. REUTERS/Javier Barbancho

Spain's acting Prime Minister and People's Party (PP) leader Mariano Rajoy reacts as he presides over an executive committee meeting at the party headquarters in Madrid, Spain, August 17, 2016. REUTERS/Javier Barbancho

Spain's acting Prime Minister and People's Party (PP) leader Mariano Rajoy reacts as he presides over an executive committee meeting at his party headquarters in Madrid, Spain, August 17, 2016. REUTERS/Javier Barbancho

Spain's acting Prime Minister and People's Party (PP) leader Mariano Rajoy reacts as he presides over an executive committee meeting at his party headquarters in Madrid, Spain, August 17, 2016. REUTERS/Javier Barbancho

Japan's main opposition Democratic Party's lawmaker Renho speaks during an interview with Reuters in Tokyo, Japan, August 16, 2016. Picture taken August 16, 2016. REUTERS/Kim Kyung-Hoon

Japan's main opposition Democratic Party's lawmaker Renho speaks during an interview with Reuters in Tokyo, Japan, August 16, 2016. Picture taken August 16, 2016. REUTERS/Kim Kyung-Hoon

Japan's main opposition Democratic Party's lawmaker Renho speaks during an interview with Reuters in Tokyo, Japan, August 16, 2016. Picture taken August 16, 2016. REUTERS/Kim Kyung-Hoon

Japan's main opposition Democratic Party's lawmaker Renho poses in front of her poster during an interview with Reuters in Tokyo, Japan, August 16, 2016. Picture taken August 16, 2016.REUTERS/Kim Kyung-Hoon

Japan's main opposition Democratic Party's lawmaker Renho poses in front of her poster during an interview with Reuters in Tokyo, Japan, August 16, 2016. Picture taken August 16, 2016.REUTERS/Kim Kyung-Hoon

Defense lawyer Leonard Ressler speaks to media following the arraignment of Oscar Morel following Mr. Morel's arraignment at the Queens Criminal Court for his alleged involvement in the murder of Imam Maulama Akonjee and Thara Uddin in Queens, New York, U.S., August 16, 2016. REUTERS/Andrew Kelly

Democratic Presidential nominee Hillary Clinton holds a rally at West Philadelphia High School in Philadelphia, Pennsylvania August 16, 2016. REUTERS/Mark Makela

Paraguay national soccer team coach Francisco Arce smiles during a news conference to announce the 24-man squad which will play against Chile and Uruguay in their upcoming 2018 World Cup qualifying matches, in Ypane, Paraguay, August 16, 2016. REUTERS/Jorge Adorno

Paraguay national soccer team coach Francisco Arce speaks during a news conference to announce the 24-man squad which will play against Chile and Uruguay in their upcoming 2018 World Cup qualifying matches, in Ypane, Paraguay, August 16, 2016. REUTERS/Jorge Adorno

New York Mayor Bill de Blasio speaks at a news conference regarding the city's reaction to the Zika virus in New York, U.S., August 16, 2016. REUTERS/Lucas Jackson

New York Mayor Bill de Blasio speaks at a news conference regarding the city's reaction to the Zika virus in New York, U.S., August 16, 2016. REUTERS/Lucas Jackson

Former FIFA President Joao Havelange attends the Soccerex global convention at Copacabana beach in Rio de Janeiro, November 22, 2010. REUTERS/Bruno Domingos/File photo

Former FIFA President Joao Havelange testifies before a congressional committee in Brasilia November 9, 2000 investigating alleged irregularities in a sponsorship contract between Brazil's Football Confederation and sportswear manufacturer Nike. REUTERS/File photo

Former FIFA President Joao Havelange attends the Soccerex global convention at Copacabana beach in Rio de Janeiro, November 22, 2010. REUTERS/Bruno Domingos/File photo

CEO Sergio Ermotti of Swiss bank UBS smiles before an annual news conference in Zurich, Switzerland February 2, 2016. REUTERS/Arnd Wiegmann/File Photo

Britain's opposition Labour Party leader Jeremy Corbyn attends a union protest against rail fair increases at London Bridge Station in London, Britain August 16, 2016. REUTERS/Neil Hall

Cast member Bradley Cooper poses at the premiere for the movie "War Dogs" at the TCL Chinese theatre in Hollywood, California U.S., August 15, 2016. REUTERS/Mario Anzuoni

Damin Anthony Pashilk, 40, is shown in this booking photo provided by Cal Fire for 17 counts of arson, during a community meeting at the evacuation center in Middletown for residents displaced by the Clayton Fire at Lower Lake in California, U.S. August 15, 2016. REUTERS/Stephen Lam

Russian performance artist Peter Pavlensky is pictured as he hands over the Vaclav Havel Prize for Creative Dissent to Russian businessman Yevgeni Chichvarkin in Prague, Czech Republic, August 15, 2016. REUTERS/David W Cerny

Eastern Libyan military commander Abdulrazak al-Nazhuri attends an interview with Reuters in Al Marj, Libya August 14, 2016. Picture taken August 14, 2016. REUTERS/Esam Omran Al-Fetori

Eastern Libyan military commander Abdulrazak al-Nazhuri attends an interview with Reuters in Al Marj, Libya August 14, 2016. Picture taken August 14, 2016. REUTERS/Esam Omran Al-Fetori

Thailand's Prime Minister Prayuth Chan-ocha speaks during a news conference after his meeting with National Security Council at Government House in Bangkok, Thailand, August 15, 2016. REUTERS/Chaiwat Subprasom

Student leader Joshua Wong looks on outside a court before a verdict, on charges of inciting and participating in an illegal assembly in 2014 which led to the "Occupy Central" pro-democracy movement, in Hong Kong August 15, 2016. REUTERS/Bobby Yip

FILE PHOTO: U.S. based cleric Fethullah Gulen at his home in Saylorsburg, Pennsylvania, U.S. July 29, 2016. REUTERS/Charles Mostoller/File photo

Actor Robert De Niro talks to reporters and film professionals during "Coffee with..." event during the 22nd Sarajevo Film Festival in Sarajevo, Bosnia and Herzegovina, August 13, 2016. REUTERS/Dado Ruvic

Iraqi singer Kadim Al Sahir performs during the Ehdeniyat International Festival in Ehden town, Lebanon August 12, 2016. REUTERS/Jamal Saidi

Actor Robert De Niro is pictured on the red carpet during the 22nd Sarajevo Film Festival in Sarajevo, Bosnia and Herzegovina, August 12, 2016. REUTERS/Dado Ruvic

Actor Robert De Niro is pictured on the red carpet during the 22nd Sarajevo Film Festival in Sarajevo, Bosnia and Herzegovina, August 12, 2016. REUTERS/Dado Ruvic

Football Soccer - Mexico's news conference - 2016 Rio Olympics - Mexico City, Mexico - 12/08/16 - Mexico's national soccer team head coach Raul Gutierrez looks on during a news conference upon his arrival from Brazil. REUTERS/Ginnette Riquelme