In this photo taken on Wednesday, July 27, 2016, a French police officers watches the festivities through binoculars on the roof of the town hall, during the opening night of the Bayonne festival, or "Fetes de Bayonne", in Bayonne, southwestern France.  Bayonne, the cultural capital of the French Basque country, hosts the yearly traditional Bayonne festival from July 27-31, and is expected to attract about one million people this year from all over France, Spain, and other European countries. (AP Photo/Bob Edme)

Bob Edme/AP

French police officers watches the festivities through binoculars on the roof of the town hall, during the “Fetes de Bayonne”, in Bayonne, southwestern France. Bayonne, the cultural capital of the French Basque country, hosts the yearly traditional Bayonne festival

A worker prepares to move a boat heavily laden with salt collected from the bed of Lake Retba during the harvest near Dakar, Senegal, on Wednesday

Xaume Olleros/Bloomberg

A worker prepares to move a boat heavily laden with salt collected from the bed of Lake Retba during the harvest near Dakar, Senegal, on Wednesday

German Chancellor Angela Merkel arrives for a news conference in Berlin, Germany, July 28, 2016.

Hannibal Hanschke/Reuters

German Chancellor Angela Merkel arrives for a news conference in Berlin, Germany

Faithfuls greet Pope Francis as he arrives at the Jasna Gora shrine in Czestochowa, Poland July 28, 2016. REUTERS/David W Cerny

David W Cerny/Reuters

Faithfuls greet Pope Francis as he arrives at the in Czestochowa, Poland 

 A protester stands with his mouth gagged

Patrick T. Fallon/AFP/Getty Images

A protester stands with his mouth gagged with the American flag at a rally of support for former Democratic presidential candidate Bernie Sanders and protest against Hillary Clinton’s nomination during the 2016 Democratic National Convention

In this photograph taken on July 27, 2016, Afghan boy children run behind a cart transporting bricks on the outskirts of Jalalabad.  / AFP PHOTO / NOORULLAH SHIRZADANOORULLAH SHIRZADA/AFP/Getty Images

Noorullah Shirzada/AFP

Afghan children run behind a cart transporting bricks on the outskirts of Jalalabad 

***BESTPIX*** PHILADELPHIA, PA - JULY 27:   (Editors Note: Image has been converted to black and white) US President Barack Obama delivers remarks on the third day of the Democratic National Convention at the Wells Fargo Center, July 27, 2016 in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25.  (Photo by Win McNamee/Getty Images)

Win McNamee/Getty

US President Barack Obama delivers remarks on the third day of the Democratic National Convention at the Wells Fargo Center in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party’s nomination

Nuns of Ukrainian Orthodox Church of the Moscow Patriarchate take part in a procession petitioning for peace in Kiev

Gleb Garanich/Reuters

Nuns of Ukrainian Orthodox Church of the Moscow Patriarchate take part in a procession petitioning for peace marking the Christianisation of the country, which was known as Kievan Rus’, by its grand prince, Vladimir I (Vladimir the Great) in 988AD, in Kiev, Ukraine.

BRISTOL, ENGLAND - JULY 27:  A construction worker moves a traffic cone in front of artwork by Odeith and is part of the 2016 Upfest on July 27, 2016 in Bristol, England. The annual event, which this year helped celebrate 45 years of the Mr Men and Little Miss book series, started in 2008 and is said to be the largest free street art and graffiti festival in Europe. The festival now attracts more than 300 artists including Inkie, Jody, Pichi & Avo and Leon Keer from 25 countries to paint live on walls and surfaces around Bedminster and Southville areas of the city of Bristol, the hometown of guerrilla artist Banksy. Some of the graffiti art work is painted on moveable boards and temporary hoardings, but murals on some venues and buildings remain all year until the next festival.  (Photo by Matt Cardy/Getty Images)

Matt Cardy/Getty

A construction worker moves a traffic cone in front of artwork by Odeith and is part of the 2016 Upfest in Bristol, England. The annual event, which this year helped celebrate 45 years of the Mr Men and Little Miss book series, started in 2008 and is said to be the largest free street art and graffiti festival in Europe. 

Workers check on the flag placement on the stage as they prepares for the third day session of the Democratic National Convention in Philadelphia, Wednesday, July 27, 2016. (AP Photo/John Locher)

John Locher/AP

Workers check on the flag placement on the stage as they prepares for the third day session of the Democratic National Convention in Philadelphia 

A framed picture of kittens lies amidst rubble at a site hit by airstrikes in the rebel-held Douma neighbourhood of Damascus, Syria

Bassam Khabieh/Reuters

A framed picture of kittens lies amidst rubble at a site hit by airstrikes in the rebel-held Douma neighbourhood of Damascus, Syria on Wednesday

epa05443458 An Indian paramilitary soldier stands guard during curfew in downtown area of Srinagar, the summer capital of Indian Kashmir, 27 July 2016. According to local news reports, authorities have re-imposed curfew in some parts of Srinagar followed by clashes that erupted on 26 July after the curfew was lifted.  The curfew, however, continues in south Kashmir. So far 50 civilians have been killed and over 3000 injured following the protests over the killing of Hizb-ul-Mujahideen commander, Burhan Muzaffar Wani and his two associates in a gunfight on 08 July.  EPA/FAROOQ KHAN

Farooq Khan/EPA

An Indian paramilitary soldier stands guard during curfew in downtown area of Srinagar, the summer capital of Indian Kashmir

epa05443258 Thick smoke spreads over a burning Styrofoam site while firefighters attempt to put it out in Wittenberge, Germany, 27 July 2016. According to initial information, no one was injured in the factory from Austrian insulation company Austrotherm. Lightning set the giant Styrofoam site on fire and caused millions of euros worth of damage.  EPA/JENS WEGNER

Jens Wegner/EPA

Thick smoke spreads over a burning Styrofoam site while firefighters attempt to put it out in Wittenberge, Germany. According to initial information, no one was injured in the factory from Austrian insulation company Austrotherm 

Buddhist monks walk at Wat Ong Teu temple in Vientiane, Laos

Jorge Silva/Reuters

Buddhist monks walk at Wat Ong Teu temple in Vientiane, Laos

Artist Jonathan Owen unveils a modern interpretation of the female nude, housed in Edinburgh's Burns Monument which is open to the public for the first time in 180 years for the Edinburgh Art Festival 2016. The festival is open to the public between July 28 and August 28. PRESS ASSOCIATION Photo. Picture date: Wednesday July 27, 2016. Photo credit should read: Jane Barlow/PA Wire.

Jane Barlow/PA

Artist Jonathan Owen unveils a modern interpretation of the female nude, housed in Edinburgh’s Burns Monument which is open to the public for the first time in 180 years for the Edinburgh Art Festival 2016 

epa05443055 Palestinians check a damaged building after the Israeli army carried out an operation hunting down a wanted Palestinian man, in the village of Soref, near Hebron, the West Bank, 27 July 2016. The Israeli army purportedly killed Mohammad Faqeeh and arrested three others after a fire fight. Faqeeh allegedly shot and killed an Israeli settler south of Hebron on 01 July 2016, members of the Israeli army said.  EPA/ABED AL HASHLAMOUN

Abed Al Hashlamoun/EPA

Palestinians check a damaged building after the Israeli army carried out an operation hunting down a wanted Palestinian man, in the village of Soref, near Hebron in the West Bank

epa05442919 Delegates react as Democratic Nominee for United States President Hillary Clinton appears live via satellite at the conclusion of the second day of the Democratic National Convention at the Wells Fargo Center in Philadelphia, Pennsylvania, USA, 26 July 2016. The four-day convention is expected to end with Hillary Clinton formally accepting the nomination of the Democratic Party as their presidential candidate in the 2016 election.

Justin Lane/EPA

Delegates react as Democratic Nominee for United States President Hillary Clinton appears live via satellite at the conclusion of the second day of the Democratic National Convention at the Wells Fargo Center in Philadelphia, Pennsylvania, USA 

Czarek Sokolowski/AP

Young women from France are among the dozens of thousands of young people from around the globe walking during thunderstorms to the site of a Catholic Mass in the Blonia green in Krakow, Poland 

An aerial view shows people strolling through a crop circle on a field near Mammendorf, southern Germany, on July 26, 2016. The pattern has a diameter of 180 meters. / AFP PHOTO / dpa / Sven Hoppe / Germany OUTSVEN HOPPE/AFP/Getty Images

Outsven Hoppe/AFP/Getty

An aerial view shows people strolling through a crop circle on a field near Mammendorf, southern Germany 

Painted horse sculptures are seen in the stables at the Tianjin Goldin Metropolitan Polo Club in Tianjin, China

Kevin Frayer/Getty Images

Painted horse sculptures are seen in the stables at the Tianjin Goldin Metropolitan Polo Club in Tianjin, China.