Frankie Dettori celebrates after riding Ardad to victory in the Pepsi Max Flying Childers Stakes during day three of the 2016 Ladbrokes St Leger Festival at Doncaster Racecourse, Doncaster. PRESS ASSOCIATION Photo. Picture date: Friday September 9, 2016. See PA story RACING Doncaster. Photo credit should read: Anna Gowthorpe/PA Wire

Anna Gowthorpe/PA

Frankie Dettori celebrates after riding Ardad to victory in the Pepsi Max Flying Childers Stakes during day three of the 2016 Ladbrokes St Leger Festival at Doncaster Racecourse, Doncaster

Muslim pilgrims walk after Friday prayers at the Grand mosque in Mecca September

Ahmed Jadallah/Reuters

Muslim pilgrims walk after Friday prayers at the Grand mosque in Mecca

Greek Prime Minister Alexis Tsipras welcomes Italian Prime Minister Matteo Renzi for a summit of southern European states at Zappeion Hall in Athens, Greece, September 9, 2016. REUTERS/Alkis Konstantinidis     TPX IMAGES OF THE DAY

Alkis Konstantinidis/Reuters

Greek Prime Minister Alexis Tsipras welcomes Italian Prime Minister Matteo Renzi for a summit of southern European states at Zappeion Hall in Athens, Greece

Paramilitary policemen listen to the officer addressing them in the Forbidden City in Beijing, China, September 9, 2016. REUTERS/Thomas Peter   TPX IMAGES OF THE DAY

Thomas Peter/Reuters

Paramilitary policemen listen to the officer addressing them in the Forbidden City in Beijing, China

The sun rises over the Mont Blanc, 3,842 meters (12,605 feet), between Italy and France, as seen from a helicopter, Friday, Sept. 9, 2016. Dozens of tourists who were trapped in cable cars dangling above the Alps overnight, including a 10-year-old child, have all been safely rescued. A series of cable cars got stuck after cables tangled at 3,600 meters altitude over the Mont Blanc massif in the Alps on Thursday, prompting a major rescue operation. (AP Photo/Luca Bruno)

Luca Bruno/AP

The sun rises over the Mont Blanc, 3,842 meters (12,605 feet), between Italy and France

Indian children look on as activists burn tyres and material to blockade traffic on a major connecting road during a statewide strike in Bangalore on September 9, 2016.   Agitation in the southern Indian state of Karnataka has been increasing since the recent Supreme Court order to the state to release of 15,000 cusecs of water from the River Cauvery each day to the neighbouring state of Tamil Nadu. Karnataka is facing an acute shortage of water in its reservoirs, and rivers as the state has only received subpar rainfall in the catchment areas leading to protests by farmers and pro-Kannada organisations refusing to share water with its neighbouring state. / AFP PHOTO / MANJUNATH KIRANMANJUNATH KIRAN/AFP/Getty Images

Manjunath Kiran/AFP/Getty

Indian children look on as activists burn tyres and material to blockade traffic on a major connecting road during a statewide strike in Bangalore, India

 South Korean and US marines move to a position during a re-enactment of the Incheon landing to mark the 66th anniversary of the start of Operation Chromite, the battle that turned the tide in the Korean War, in the western port city of Incheon on September 9, 2016.   South Korea marked the 66th anniversary of the daring Incheon Landing which was led by US General Douglas MacArthur and led two weeks later to the recapture of Seoul from North Korean invaders during the Korean War. North Korea has conducted a fifth nuclear test, its most powerful to date, South Korea's President Park Geun-Hye said on September 9, condemning the move as an act of "self-destruction" that would deepen its isolation. / AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/Getty Images

Jung Yeon-Jejung/AFP/Getty

South Korean and US marines move to a position during a re-enactment of the Incheon landing to mark the 66th anniversary of the start of Operation Chromite, the battle that turned the tide in the Korean War, in the western port city of Incheon

An aerial view of the Statue of Liberty, September 8, 2016 in New York City. New York City is preparing to mark the 15th anniversary of the September 11 terrorist attacks. (Photo by Drew Angerer/Getty Images)

Drew Angerer/Getty

An aerial view of the Statue of Liberty. New York City is preparing to mark the 15th anniversary of the September 11 terrorist attacks

Democratic presidential nominee Hillary Clinton listens to a question while speaking to the press at Westchester County Airport September 8, 2016 in White Plains, New York. Clinton Thursday slammed her Republican opponent Donald Trump's recent praise for President Vladimir Putin as "scary." / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images

Brendan Smialowski/AFP/Getty

Democratic presidential nominee Hillary Clinton listens to a question while speaking to the press at Westchester County Airport in White Plains, New York 

Men's 5000m T11 Final - Olympic Stadium - Rio de Janeiro, Brazil - 08/09/2016.  Erick Kiptoo Sang of Kenya leads the pack as he runs with his guide Erick Kiptoo Terer. REUTERS/Ricardo Moraes FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.

Ricardo Moraes/Reuters

Erick Kiptoo Sang of Kenya leads the pack as he runs with his guide Erick Kiptoo Terer in the Men’s 5000m T11 Final during the Paralympics in Rio de Janeiro

The 2016 Junk Kouture Eastern winner Rebecca McNally wears 'A Tribute to Ziggy Stardust' during the Bank of Ireland Junk Kouture 2017 contest launch at Charlotte Quay in Dublin. PRESS ASSOCIATION Photo. Picture date: Thursday September 8, 2016. The contest is Ireland's recycled fashion competition for secondary school students which invites young people to design and create works of fashion art from recyclable materials. Photo credit should read: Brian Lawless/PA Wire

Brian Lawless/PA

The 2016 Junk Kouture Eastern winner Rebecca McNally wears ‘A Tribute to Ziggy Stardust’ during the Bank of Ireland Junk Kouture 2017 contest launch at Charlotte Quay in Dublin. The contest is Ireland’s recycled fashion competition for secondary school students which invites young people to design and create works of fashion art from recyclable materials 

Swiss Samuel Volery, professional mountaineer, walks on the 585 meter line during the Highline Extreme event on top of the Moleson peak at 2000 meters above sea level in the Swiss Alps near Fribourg, Switzerland, Thursday, Sept. 8, 2016. 25 of the European best slackliners compete until September 11, on 8 different lines ranging from 45 meters to 495 meters. To avoid the danger of falling down, the athlete is secured with a rope. (Laurent Gillieron/Keystone via AP)

Laurent Gillieron/AP

Swiss Samuel Volery, professional mountaineer, walks on the 585 meter line during the Highline Extreme event on top of the Moleson peak at 2000 meters above sea level in the Swiss Alps near Fribourg, Switzerland

A goat tries to escape from the boot of a taxi after being purchased at a livestock market ahead of the Eid al-Adha festival in Kolkata, India, September 8, 2016. REUTERS/Rupak De Chowdhuri     TPX IMAGES OF THE DAY

Rupak De Chowdhuri/Reuters

A goat tries to escape from the boot of a taxi after being purchased at a livestock market ahead of the Eid al-Adha festival in Kolkata, India

Workers and Saudi security forces make the Fajr prayer before sunrise, outside the Grand Mosque in the Muslim holy city of Mecca, Saudi Arabia, Thursday, Sept. 8, 2016. Millions of pilgrims have arrived to Mecca ahead of the Hajj annual pilgrimage which begins Saturday, Sept. 10, 2016.

Nariman El-Mofty/AP

Workers and Saudi security forces make the Fajr prayer before sunrise, outside the Grand Mosque in the Muslim holy city of Mecca, Saudi Arabia. Millions of pilgrims have arrived to Mecca ahead of the Hajj annual pilgrimage which begins on Saturday 

Light from a forest fire colours the sky red near the village of Entrimo, northwestern Spain

Miguel Riopa/AFP/Getty

Light from a forest fire colours the sky red near the village of Entrimo, northwestern Spain 

Mike Ashley, billionaire and founder of Sports Direct International Plc, places his wallet and a wad of 50 pound banknotes as he demonstrates the security checking procedures during a tour of the company's warehouse following the company's annual general meeting (AGM) at their headquarters in Shirebrook, U.K., on Wednesday, Sept. 7, 2016. Britain's biggest sporting-goods retailer has been admonished by lawmakers for presiding over “appalling” treatment of workers at its main warehouse and come under fire from shareholders over corporate governance. Photographer: Chris Ratcliffe/Bloomberg

Chris Ratcliffe/Bloomberg

Mike Ashley, billionaire and founder of Sports Direct International Plc, places his wallet and a wad of 50 pound banknotes as he demonstrates the security checking procedures during a tour of the company’s warehouse following the company’s annual general meeting (AGM) at their headquarters in Shirebrook, U.K

Lightning flashes above skyscrapers in Central Business District during a rainstorm in Beijing, Wednesday

Andy Wong/AP

Lightning flashes above skyscrapers in Central Business District during a rainstorm in Beijing

British artist Anthony Gormley poses for a photograph next to his artwork entitled 'Object, 199', a life-size cast-iron sculpture cast from the artist's body and hung from the ceiling of the National Portrait Gallery, during a press preview on September 7, 2016 in London, England. The work is accompanied on October 5 by 'Fall, 1999', a selection of drawings also by Mr Gormley.  (Photo by Carl Court/Getty Images)

Carl Court/Getty

British artist Athony Gormley poses for a photograph next to his artwork entitled ‘Object, 199′, a life-size cast-iron sculpture cast from the artist’s body and hung from the ceiling of the National Portrait Gallery in London, England 

German Chancellor Angela Merkel is silhouetted as she gives a speech during a session of the German Bundestag (lower house of parliament) in Berlin on September 7, 2016. / AFP PHOTO / TOBIAS SCHWARZTOBIAS SCHWARZ/AFP/Getty Images

Tobias Schwarz/AFP/Getty

German Chancellor Angela Merkel is silhouetted as she gives a speech during a session of the German Bundestag in Berlin

Women shout slogans during a protest in Srinagar, against the recent killings in Kashmir, September 7, 2016. REUTERS/Danish Ismail

Danish Ismail/Reuters

Women shout slogans during a protest in Srinagar, against the recent killings in Kashmir