Migrants rush into Serbia over the border with Macedonia near the village of Miratovac, Serbia, Monday, August 24, 2015. The more than 5,000 migrants who reached Serbia overnight faced an overcrowded refugee center where they have to apply for asylum – the paper that allows them three days to reach Hungary. (Photo by Darko Vojinovic/AP Photo)

People walk past an exchange office sign showing the currency exchange rates in Moscow, Russia, Friday, August 21, 2015. The Russian ruble currency is falling under the pressure of cheaper oil, reviving concerns over the country's economic outlook. (Photo by Ivan Sekretarev/AP Photo)

Singer Christina Milian performs at the 2015 Billboard Hot 100 Music Festival at Nikon at Jones Beach Theater on Saturday, August 22, 2015, in Wantagh, N.Y. (Photo by Scott Roth/Invision/AP Photo)

(L-R) Lil Wayne and Christina Milian perform onstage during the 2015 Billboard Hot 100 Music Festival at Nikon at Jones Beach Theater on August 22, 2015 in Wantagh, New York. (Photo by Noam Galai/WireImage)

(L-R) Perrie Edwards, Leigh Anne-Pinnock, Jesy Nelson and Jade Thirlwall of Little Mix perform during day 1 at 2015 Billboard Hot 100 Music Festival at Nikon at Jones Beach Theater on August 22, 2015 in Wantagh, New York. (Photo by John Lamparski/WireImage)

Ashley Nicolette Frangipane of Halsey performs at 2015 Billboard Hot 100 Music Festival - Day 1 at Nikon at Jones Beach Theater on August 22, 2015 in Wantagh, New York. (Photo by John Lamparski/WireImage)

Nikolai Statkevich, former opposition presidential candidate in 2010 campaign, is tossed into the air by friends as he arrives after his release from prison in Minsk, Belarus, August 22, 2015. Belarussian President Aleksander Lukashenko has pardoned six jailed opposition figures, including Nikolai Statkevich who was imprisoned after running against him for the presidency in 2010, his administration said on Saturday. Statkevich, 59, is the last to be released of about 10 politicians who were rounded up and detained after running against Lukashenko in an election in 2010 dubbed fraudulent by the West. (Photo by Yauhen Yerchak/Reuters)

Relatives carry the coffin of Andrea Alvarez, whose death is being investigated as a femicide, during her funeral and a protest by activists against femicide in La Paz, Bolivia August 22, 2015. Alvarez died early on August 19, 2015, from injuries authorities say were caused by a vehicle driven by William Kushner, a man she was involved with. Kushner has been charged with femicide, and denies the charge, according to local media. Some 39 cases of femicide have been recorded in La Paz, and more than 200 nationwide, since 2013, local media reported. (Photo by David Mercado/Reuters)

Activists against femicide attend a protest rally during the funeral of Andrea Alvarez, whose death is being investigated as a femicide, in La Paz, Bolivia August 22, 2015. (Photo by David Mercado/Reuters)

Activists participate in the funeral march of Andrea Alvarez, whose death is being investigated as a femicide in La Paz, Bolivia August 22, 2015. (Photo by David Mercado/Reuters)

A picture of Andrea Alvarez, whose death is being investigated as a femicide, is displayed during a rally at her funeral march in La Paz, Bolivia August 22, 2015. (Photo by David Mercado/Reuters)

Aircraft perform during a rehearsal for a military parade in Beijing, August 23, 2015. Troops from at least 10 countries including Russia and Kazakhstan will join an unprecedented military parade in Beijing next month to commemorate China's victory over Japan during World War Two, Chinese officials said. The parade on September 3 will involve about 12,000 Chinese troops and 200 aircraft, Qi Rui, deputy director of the government office organizing the parade, told reporters in Beijing on Friday. (Photo by Reuters/Stringer)

Aircraft fly over the Forbidden City as they perform during a rehearsal for a military parade in Beijing August 23, 2015. (Photo by Reuters/Stringer)

Aircraft perform during a rehearsal for a military parade in Beijing August 23, 2015. (Photo by Reuters/Stringer)

Soldiers of China's People's Liberation Army (PLA) march during a rehearsal for a military parade in Beijing, August 23, 2015. (Photo by Reuters/Stringer)

Aircraft perform during a rehearsal for a military parade in Beijing August 23, 2015. (Photo by Reuters/Stringer)

People ride their motorcycles past a digital billboard showing a sketch of the main suspect in Monday's attack on Erawan shrine, in Bangkok, Thailand, August 23, 2015. Thai authorities have tripled to $85,000 a reward for information leading to the arrest of the main suspect in the country's worst ever bombing. The words on top of the sketch read, “Criminal Record Registration Division”, and the words on the right side of the billboard read, “Award for arrest 1,000,000 baht. Requesting the cooperation of citizens, if you have seen or have any clues, call 1599”. (Photo by Chaiwat Subprasom/Reuters)

Emergency services and crash investigation officers work at the site where a Hawker Hunter fighter jet crashed onto the A27 road at Shoreham near Brighton, Britain August 23, 2015. A jet aircraft ploughed into several cars on a busy road near an airshow in southern England on Saturday, killing at least seven people, police said. (Photo by Luke MacGregor/Reuters)

A woman hikes up a mountain overlooking a landslide caused by Typhoon Goni, that damaged a portion of Kennon Road, in Baguio city in northern Philippines, August 23, 2015. The death toll in the Philippines from Typhoon Goni rose to nine after five more people were buried by landslides in mountainous areas, officials said on Saturday. Packing gusts of up to 185 kph (115 mph), Goni was estimated to be 105 km (65 miles) east-northeast of Batanes, the northernmost province in the Philippines, and moving at 13 kph towards southern Japan. (Photo by Harley Palangchao/Reuters)

A Lebanese army soldier mans a checkpoint at an entrance to the Ain al-Hilweh Palestinian refugee camp, as Palestinian Fatah gunmen fire their weapons at militants of Islamist group Jund al-Sham near the port-city of Sidon, southern Lebanon August 23, 2015. Palestinian factions have agreed on Sunday to a cease-fire between the Fatah Movement and Jund al-Sham, local media reported. (Photo by Ali Hashisho/Reuters)

An ambulance leaves the Ain al-Hilweh Palestinian refugee camp, as a Palestinian Fatah gunman fires his weapon at militants of Islamist group Jund al-Sham near the port-city of Sidon, southern Lebanon August 23, 2015. (Photo by Ali Hashisho/Reuters)

Members of the Islamic Medical Association stand at an entrance of Ain al-Hilweh Palestinian refugee camp during clashes between Palestinian Fatah gunmen and militants of Islamist group Jund al-Sham in the area, near the port-city of Sidon, southern Lebanon August 23, 2015. (Photo by Ali Hashisho/Reuters)

Protesters set a motorbike on fire during a protest against corruption and against the government's failure to resolve a crisis over rubbish disposal, near the government palace in Beirut, Lebanon August 23, 2015. Protests against the Lebanese government turned violent for a second day on Sunday, and Prime Minister Tammam Salam threatened to resign as public discontent brought thousands into the streets. (Photo by Hasan Shaaban/Reuters)

Riot police clash with protesters during a protest against corruption and against the government's failure to resolve a crisis over rubbish disposal, near the government palace in Beirut, Lebanon August 23, 2015. (Photo by Hasan Shaaban/Reuters)

Protesters clash with riot police and security forces during a protest against corruption and against the government's failure to resolve a crisis over rubbish disposal, near the government palace in Beirut, Lebanon August 23, 2015. (Photo by Hasan Shaaban/Reuters)

Protesters clash with policemen during a protest against corruption and against the government's failure to resolve a crisis over rubbish disposal, near the government palace in Beirut, Lebanon August 23, 2015. (Photo by Mohamed Azakir/Reuters)

Protesters take cover behind barricades as they clash with anti-riot policemen during a protest against corruption and against the government's failure to resolve a crisis over rubbish disposal, near the government palace in Beirut, Lebanon August 23, 2015. (Photo by Mohamed Azakir/Reuters)

An Afghan mother comforts her crying child moments after a dinghy carrying Afghan migrants arrived on the island of Lesbos, Greece August 23, 2015. Greece, mired in its worst economic crisis in generations, has been found largely unprepared for a mass influx of refugees, mainly Syrians. Arrivals have exceeded 160,000 this year, three times as high as in 2014. The crisis has exposed massive shortages in Greece's available facilities, but also striking discord within the European Union on how to handle the humanitarian crisis. (Photo by Alkis Konstantinidis/Reuters)

A Syrian refugee girl from Kobani cries as she hugs her mother, moments after arriving with other Syrian refugees on a dinghy on the island of Lesbos, Greece August 23, 2015. (Photo by Alkis Konstantinidis/Reuters)

Two Afghan migrant women hug, moments after they arrived on a dinghy on the island of Lesbos, Greece August 23, 2015. (Photo by Alkis Konstantinidis/Reuters)

Triathletes take part in the 3800 m swimming leg of the KMD Ironman Copenhagen 2015 in Copenhagen August 23, 2015. (Photo by Nikolai Linares/Reuters/Scanpix Denmark)

Triathletes take part in the 3800 m swimming leg of the KMD Ironman Copenhagen 2015 in Copenhagen August 23, 2015. (Photo by Nikolai Linares/Reuters/Scanpix Denmark)

Topless activist Brianna Locke, with the words “Still Not Asking for It” written on her chest, poses for a television news report during a “Free the Nipple” demonstration in Hampton Beach, New Hampshire August 23, 2015. Hundreds of bare-breasted women are expected to converge on a popular New Hampshire beach on Sunday to push for greater acceptance of topless sunbathing, much to the consternation of some local residents and officials. (Photo by Brian Snyder/Reuters)

Topless activists pose for photographs for onlookers during a “Free the Nipple” demonstration in Hampton Beach, New Hampshire August 23, 2015. (Photo by Brian Snyder/Reuters)

Rachel Jessee speaks to a crowd, consisting mainly of photographers, during a media event following the GoTopless Day Parade in Bryant Park, Sunday, August 23, 2015, in New York. The parade took to the streets to counter critics who are complaining about topless tip-seekers in Times Square. Appearing bare-breasted is legal in New York. But Mayor Bill de Blasio and police Commissioner Bill Bratton say the body-painted women in the square who take photos with tourists are a nuisance. (Photo by Kevin Hagen/AP Photo)

A topless woman walks through Bryant Park following the protest march called the GoTopless Day Parade Sunday, August 23, 2015, in New York. (Photo by Kevin Hagen/AP Photo)

Topless activist Phoenix Feeley speaks during a press event following the protest march called the GoTopless Day Parade Sunday, August 23, 2015, in New York. (Photo by Kevin Hagen/AP Photo)

Newly recruits to the forces loyal to Yemen's exiled government in Saudi Arabia exercise as they enlist in the southern port city of Aden, August 23, 2015. Al Qaeda militants took control of a western district of Yemen's main port city of Aden on Saturday night, residents said, in another sign that the group is drawing strength from five months of civil war. (Photo by Reuters/Stringer)

Orica GreenEdge rider Esteban Chaves of Colombia sprays champagne as he celebrates on the podium after winning the 158.7 km (98.6 miles) 2nd stage of the Vuelta Tour of Spain cycling race from Alhaurin de la Torre to Caminito del Rey, in Ardales, southern Spain, August 23, 2015. (Photo by Jon Nazca/Reuters)

Members of the Abuja cultural troupe wait for the arrival of the U.N. Secretary General Ban Ki-moon at the Presidential wing of the Nnamdi Azikiwe International airport in Abuja, Nigeria, August 23, 2015. (Photo by Afolabi Sotunde/Reuters)

Asylum seekers play cards with immigrant supporters outside the home of asylum seekers located in a shelter in Heidenau, Germany August 23, 2015. Germany's interior minister led calls on Sunday for a crackdown on right-wing militants and racists after a second night of scuffles between protesters and police outside a refugee shelter in an eastern German town near Dresden. (Photo by Axel Schmidt/Reuters)

Iraqi security forces and Shi'ite fighters from Saraya al-Salam, loyal to radical cleric Muqtada al-Sadr fire toward Islamic State militants on the outskirts of Samarra,Iraq August 23, 2015. (Photo by Reuters/Stringer)

An Ukrainian serviceman dance with a woman during an open air celebrations of the Independence Day of Ukraine in Novoselivka village, some 20 km from Donetsk, on August 23, 2015. Ukraine will mark the Independence Day on August 24, 2015. (Photo by Anatolii Stepanov/AFP Photo)

Ukrainian Finance Minister Natalie Jaresko (R), accompanied by her daughter, visits an exhibition of flags, brought from eastern regions of the country, where military conflict is taking place, during a ceremony marking the Day of the State Flag on the eve of the Independence Day in Kiev, Ukraine, August 23, 2015. (Photo by Valentyn Ogirenko/Reuters)

Venezuelan soldiers patrol close to the border with Colombia, as part of a special deployment, at San Antonio in Tachira state, Venezuela, August 23, 2015. Venezuela's closure of two border crossings with Colombia hurts innocent people, Colombia's President Juan Manuel Santos said on Saturday, adding that he hoped to speak to his Venezuelan counterpart Nicolas Maduro to find a solution. Maduro closed the crossings on Wednesday after a shootout between smugglers and troops left three soldiers wounded. He declared a 60-day state of emergency in five border municipalities on Friday, and deployed a contingent of 1,500 soldiers in the border area to join the 500 already stationed there. (Photo by Carlos Eduardo Ramirez/Reuters)

Venezuelan soldiers detain and escort men whom local media reported were suspected to be linked to a paramilitary group from Colombia, during a special deployment, at San Antonio in Tachira state, Venezuela, August 22, 2015. (Photo by Carlos Eduardo Ramirez/Reuters)

Venezuelan policemen stand guard in front of people queueing while they wait to cross the border to Colombia at San Antonio in Tachira state, Venezuela, August 23, 2015. (Photo by Carlos Eduardo Ramirez/Reuters)

A general view of the the scene after hundreds of homes were demolished early 22 August 2015 by Nairobi County Government during forced evictions. Most families spent their nights outside their demolished houses as they guarded their belongings in Mathare slums in Nairob. Amnesty International on 21 August 2015 said that the Nairobi County Government must immediately stop the demolition of hundreds of homes and forced evictions in the slum. So far more than 300 homes have been destroyed and an estimate of 500 people forcibly evicted without any warnings given to them. (Photo by Daniel Irungu/EPA)

U.S. President Barack Obama holds hands with his daughter Malia as the Obama family disembark Air Force One upon their return to Washington after a two-week vacation on Martha's Vineyard August 23, 2015. (Photo by Kevin Lamarque/Reuters)