Omar Craddock of the USA reacts during the men's Triple Jump qualification of the Beijing 2015 IAAF World Championships at the National Stadium, also known as Bird's Nest, in Beijing, China, 26 August 2015. (Photo by Franck Robichon/EPA)

People carry their belongings while crossing the Tachira river border with Venezuela into Colombia, near Villa del Rosario village, August 25, 2015. The ongoing crisis on the border between Colombia and Venezuela should not be used for political point-scoring by leaders in either country ahead of elections in coming months, the Colombian government said on Tuesday. (Photo by Jose Miguel Gomez/Reuters)

Colombian nationals carry their belongings across the Tachira river, from Venezuela to the La Parada area, close to Cucuta, Colombia, 25 August 2015. Colombian President Juan Manuel Santos asked the Venezuelan authorities to respect the Colombian people living in the border area and considered as “unacceptable” and “unbearable” the method used to deport them from Venezuelan territory. (Photo by Mauricio Duenas Castaneda/EPA)

Riot police officers confront the media as they attempt to take pictures and videos of former Guatemalan Vice President Roxana Baldetti in her vehicle as she leaves her hearing in Guatemala City, Guatemala, August 25, 2015. Baldetti today was linked to criminal proceedings on charges of conspiracy and fraud, a number of corruption investigations have devastated the President Otto Perez's cabinet and led to her resignation in May. Baldetti was arrested earlier this month on suspicion of illicit association, bribery and fraud linked to the customs scheme. Baldetti has denied any wrongdoing. (Photo by Jorge Dan Lopez/Reuters)

Guatemalan journalists clash with members of the Penitentiary System police as they try to cover the hearing of former Guatemalan vice President Roxana Baldetti, outside the court of justice in Guatemala City, Guatemala, 25 August 2015. Former Guatemalan vice-president Roxana Baldetti refused to testify during a court hearing in which prosecutors accused her of leading a network of customs corruption, a case in which President Otto Perez Molina is also implicated. (Photo by Esteban Biba/EPA)

Riot police officers confront the media as they attempt to take pictures and videos of former Guatemalan Vice President Roxana Baldetti in her vehicle as she leaves her hearing in Guatemala City, Guatemala, August 25, 2015. (Photo by Jorge Dan Lopez/Reuters)

A hillside burned by the Okanogan Complex fire is pictured near Tonasket, Washington August 25, 2015. In north-central Washington, a cluster of deadly fires dubbed the Okanogan Complex has burned more than 258,339 acres (104,546 hectares), overtaking last year's Carlton Complex fire as the state's largest on record. (Photo by David Ryder/Reuters)

A man looks at a sculpture of a fiberglass horse in downtown Ciudad Juarez, Mexico, August 25, 2015. Twenty fiberglass horses, designed and painted by local artists, were displayed to the public on Tuesday by the local government in order to attract tourism and to show an improvement of the urban image, local media reported. (Photo by Jose Luis Gonzalez/Reuters)

A family takes a selfie in front of sculptures of fiberglass horses in downtown Ciudad Juarez, Mexico, August 25, 2015. (Photo by Jose Luis Gonzalez/Reuters)

People walk near sculptures of fiberglass horses in downtown Ciudad Juarez, Mexico, August 25, 2015. (Photo by Jose Luis Gonzalez/Reuters)

A craftsman fixes the statue of Hindu god Brahma after it was damaged during the deadly blast at the Erawan shrine in Bangkok, Thailand, August 26, 2015. Police on Tuesday questioned a taxi driver who may have driven the main suspect away from the area of last week's deadly attack in Bangkok, as forensic experts struggle to unearth vital evidence in Thailand's worst ever bombing. (Photo by Athit Perawongmetha/Reuters)

Playboy Bunnies pose for a selfie at the premiere of “The Transporter Refueled” at Playboy Mansion in Los Angeles, California August 25, 2015. The movie opens in the U.S. on September 4. (Photo by Mario Anzuoni/Reuters)

Playboy Bunnies pose at the premiere of “The Transporter Refueled” at Playboy Mansion in Los Angeles, California August 25, 2015. (Photo by Mario Anzuoni/Reuters)

Playboy Bunnies dance at the premiere of “The Transporter Refueled” at Playboy Mansion in Los Angeles, California August 25, 2015. (Photo by Mario Anzuoni/Reuters)

Hungarian police positioned nearby watch as Syrian migrants climb under a fence to enter Hungary at the Hungarian-Serbian border near Roszke, Hungary August 26, 2015. Hungary's government has started to construct a 175-km-long (110-mile-long) fence on its border with Serbia in order to halt a massive flow of migrants who enter the EU via Hungary and head to western Europe. (Photo by Laszlo Balogh/Reuters)

Syrian refugees cross into Hungary underneath the border fence on the Hungarian-Serbian border near Roszke, Hungary on August 26, 2015. The number of refugees entering Hungary has reached a new high as the government hurries to build a 4-meter (13-foot) fence on the Serbian border to stop them. More than 140,000 migrants have reached Hungary on routes across the Balkans so far in 2015. Recently, some 80 percent of them are from war zones like Syria, Iraq and Afghanistan. (Photo by Bela Szandelszky/AP Photo)

Migrants move past Macedonian police while attempting to enter into Macedonia at the Greece-Macedonia border near the town of Gevgelija on August 26, 2015. More than 42,000 have gone through Macedonia since mid-June to try to enter the European Union, particularly the countries of the passport-free Schengen area. (Photo by Robert Atanasovski/AFP Photo)

A migrant girl looks on from behind barbed wire while waiting with her family to enter into Macedonia from Greece, on the border line between the two countries, near southern Macedonia's town of Gevgelija, on Wednesday, August 26, 2015. Some thousands of migrants have poured into Macedonia and boarded trains and busses that are taking them a step closer to the European Union. (Photo by Boris Grdanoski/AP Photo)

Officials hold confiscated elephant tusks before destroying the ivory at the Department of National Parks, Wildlife and Plant Conservation, in Bangkok, Thailand, August 26, 2015. About two tonnes (2,155.17 kg) of ivory were crushed and incinerated during the ceremony as part of a campaign against poachers, traffickers and traders involved in the illicit trade in ivory, according to a Department of National Parks, Wildlife and Plant Conservation press release. (Photo by Chaiwat Subprasom/Reuters)

A teller counts Indonesian rupiah notes and U.S. dollars for a customer at a money changer in Jakarta, Indonesia, August 26, 2015. Indonesia's central bank has urged exporters and businesses not to hoard foreign currency as part of its effort to maintain financial stability as the rupiah hit a 17-year low versus the dollar. (Photo by Nyimas Laula/Reuters)

Zimbabwean farmers sit on bags of tobacco leaves, mostly for export, at Tobacco Sales Floor Ltd. in Harare in this May 7, 2009 file photo. A fresh U.S. trade pact could provide relief to African economies buffeted by the commodities slump but a failure to reform during the boom years has left many countries unable to profit from tariff-free access to the world's largest market. (Photo by Philimon Bulawayo/Reuters)

A fish trader is seen near fish skeletons hung out to dry on wooden poles at her stall at the Obunga “mgongo-wazi” fish frying market in Kenya's western town of Kisumu in this March 7, 2013 file photo. (Photo by Thomas Mukoya/Reuters)

In this late Tuesday, August 25, 2015 photo, passenger buses set on fire by a mob go up in flames in Surat, Gujarat state, India. Authorities issued a curfew Tuesday night in at least five cities in Gujarat state, after mobs attacked police officers with stones and sticks and burned government and private vehicles. (Photo by Dinesh Trivedi/AP Photo)

A man rides a motorcycle past the wreckage of a bus that was burnt in the clashes between the police and protesters in Ahmedabad, India, August 26, 2015. India deployed paramilitary forces and imposed a curfew in the western state of Gujarat on Wednesday after violence broke out at a protest led by a powerful clan to demand more government jobs and college places. (Photo by Amit Dave/Reuters)

Participants in the “Mrs Universe 2015” contest pose for a photo with representatives of the Belarusian Autoworks (BELAZ) plant during their visit in Zhodino, Belarus, August 26, 2015. (Photo by Vasily Fedosenko/Reuters)

Participants in the “Mrs Universe 2015” contest pose for a photo at the Belarusian Autoworks (BELAZ) plant during their visit in Zhodino, Belarus, August 26, 2015. (Photo by Vasily Fedosenko/Reuters)

Participants in the “Mrs Universe 2015” contest are helped as they alight from a truck after posing for a photo at the Belarusian Autoworks (BELAZ) plant during their visit in Zhodino, Belarus, August 26, 2015. (Photo by Vasily Fedosenko/Reuters)

Participants in the “Mrs Universe 2015” contest pose for a photo at the Belarusian Autoworks (BELAZ) plant during their visit in Zhodino, Belarus, August 26, 2015. (Photo by Vasily Fedosenko/Reuters)

Participants in the “Mrs Universe 2015” contest dance at the Belarusian Autoworks (BELAZ) plant during their visit in Zhodino, Belarus, August 26, 2015. (Photo by Vasily Fedosenko/Reuters)

Participants in the “Mrs Universe 2015” contest pose for a photo at the Belarusian Autoworks (BELAZ) plant during their visit in Zhodino, Belarus, August 26, 2015. (Photo by Vasily Fedosenko/Reuters)

A participant of the “Mrs Universe 2015” contest takes a selfie picture as she stands close to a 360 ton payload BelAZ mining dump truck at the BelAZ plant in Zhodino, outside Minsk, on August 26, 2015. (Photo by Sergei Gapon/AFP Photo)

A worker carries a plastic container at Sunda Kelapa harbour in Jakarta, August 26, 2015. Bank Indonesia expects economic growth this year to slow to 4.7-5.1 percent from its previous estimate of 5-5.4 percent, central bank governor Agus Martowardojo said on Tuesday. (Photo by Reuters/Beawiharta)

Paratroopers take part in an exercise of the U.S. Army Global Response Force in Hohenfels, Germany, Wednesday, August 26, 2015. Around 5000 soldiers from 11 NATO nations participated in simultaneous multinational airborne operations across Germany, Bulgaria, Italy and Romania called “Exercise Swift Response”. The exercise was the largest Allied airborne training in Europe since the end of the Cold War. (Photo by Matthias Schrader/AP Photo)

Soldiers take part in an exercise of the U.S. Army's Global Response Force in Hohenfels near Regensburg August 26, 2015. Around 5000 soldiers from 11 Nato nations participated in simultaneous multinational airborne operations across Germany, Italy, Bulgaria and Romania, called “Exercise Swift Response. (Photo by Michael Dalder/Reuters)

The car ferry “Sardinia Vera” operated by the Corsica Ferries company arrives at the harbour of Bastia, on the French Mediterranean island of Corsica, France, August 25, 2015. (Photo by Jean-Paul Pelissier/Reuters)

French employer's body MEDEF union leader Pierre Gattaz (R) arrives with Jordan's Queen Rania (C) and her daughter Princess Salma (L) at the MEDEF union summer forum on the campus of the HEC School of Management in Jouy-en-Josas, near Paris, France, August 26, 2015. (Photo by Regis Duvignau/Reuters)

Kurdish Peshmerga fighters reload a weapon during clashes with Islamic State militants south of Daquq, north of Baghdad August 26, 2015. Kurdish forces attacked Islamic State insurgents in a cluster of villages in Iraq's northern province of Kirkuk on Wednesday, bent on securing territory they have gained in the course of rolling back the jihadists since last summer. (Photo by Reuters/Stringer)

Kurdish Peshmerga fighters walk with their weapons as smoke rises from the site of clashes, south of Daquq, north of Baghdad August 26, 2015. (Photo by Reuters/Stringer)

Kurdish Peshmerga fighters fire towards Islamic State militants south of Daquq, north of Baghdad August 26, 2015. (Photo by Reuters/Stringer)

An injured Kurdish officer is taken for treatment, during a military operation to regain control of some villages from Islamic State group fighters south of oil-rich city of Kirkuk, 180 miles (290 kilometers) north of Baghdad, Iraq, Wednesday, August 26, 2015. (Photo by AP Photo)

People pull ropes tied to a damaged ferry after it capsized in the waters of Vembanad Lake at Fort Kochi in the southern state of Kerala, India, August 26, 2015. At least six persons were killed on Wednesday when a ferry carrying around 30 people capsized after it was hit by a fishing boat in Vembanad Lake, police said. (Photo by Sivaram V/Reuters)

A rescue team member jumps from the damaged ferry as it is pulled to the banks after it capsized in the waters of Vembanad Lake at Fort Kochi in the southern state of Kerala, India, August 26, 2015. (Photo by Sivaram V/Reuters)

A worker walks past second-hand robots in a factory in Shanghai, August 21, 2015. More than a hundred second-hand robots used to make Audi A3s at a German car factory are going through refurbishment at a Wecan Group factory in Shanghai. Picture taken August 21, 2015. (Photo by Aly Song/Reuters)

An Airbus A350 XWB aircraft flies over the domes of an Orthodox church during the MAKS International Aviation and Space Salon in Zhukovsky, outside Moscow, Russia, August 26, 2015. (Photo by Maxim Zmeyev/Reuters)

A vendor sells souvenirs walking in front of an exhibition of old and rare airplanes on the airfield of MAKS-2015, the International Aviation and Space Show in the city of Zhukovsky outside Moscow, Russia, 26 August 2015. (Photo by Sergei Chirikov/EPA)

Palestinian Hamas militants take part in an anti-Israel military parade in Gaza City August 26, 2015. (Photo by Suhaib Salem/Reuters)

Lebanese citizens pass a pile of garbage blocking a street in the town of Jal el-Dib east Beirut, Lebanon, Wednesday, August 26, 2015. Protests continued Wednesday over the country's worsening garbage collection crisis. (Photo by Bilal Hussein/AP Photo)

A man on a scooter, pedestrians and cars pass by garbage piled up along a street in Beirut, Lebanon August 26, 2015. The powerful Shi'ite party Hezbollah and its Christian allies walked out of an emergency Lebanese cabinet meeting on Tuesday in protest at a proposed solution to a garbage disposal crisis that has ignited violent protests in Beirut. Public anger that has come to a head over the trash crisis turned violent at the weekend, with scores of protesters and security forces injured. (Photo by Mohamed Azakir/Reuters)

A policeman kicks a burning tyre used by demonstrators to block a road as part of a protest to demand the resignation of Honduran President Juan Orlando Hernandez in Tegucigalpa, Honduras, August 26, 2015. The protesters are calling for Hernandez's resignation over a $200 million corruption scandal at the Honduran Institute of Social Security (IHSS). (Photo by Jorge Cabrera/Reuters)

A demonstrator raises his left fist while yelling slogans during a roadblock to demand the resignation of Honduran President Juan Orlando Hernandez in Tegucigalpa, Honduras, August 26, 2015. (Photo by Jorge Cabrera/Reuters)

The shock wave of a T-38C supersonic jet flying over the Mojave Desert in California is seen in an undated NASA schlieren image released August 25, 2015. Researchers used NASA-developed image processing software to remove the desert background, then combined and averaged multiple frames to produce a clear picture of the shock waves. Schlieren imaging reveals shock waves due to air density gradient and the accompanying change in refractive index, according to a NASA news release. (Photo by Reuters/NASA)

A woman reacts as she reads a board showing the Real-U.S. dollar and several foreign currencies exchange rates in Rio de Janeiro, Brazil, August 26, 2015. While many of Brazil's largest companies have grown savvy about hedging their debt against big currency swings, an increasing number could feel the heat from the real's plunge to a more than 12-year low due to poor planning and rising debt, bankers said. Debt refinancing and hedging costs are rapidly rising as Brazil's economy falls into recession and local banks pare back credit. The real, the world's worst-performing major currency this year, according to Thomson Reuters calculations, slipped below 3.65 to the dollar on Wednesday. (Photo by Ricardo Moraes/Reuters)

An opposition supporter dressed as Nicaraguan first lady Rosario Murillo performs in front of a line of riot police during a protest in front of the Supreme Electoral Council (CSE) building in Managua, Nicaragua August 26, 2015. The protesters said they were demonstrating to demand fairer elections in the country next year. (Photo by Oswaldo Rivas/Reuters)

Opposition supporters carry a pig's head with the acronym of the Supreme Electoral Council (CSE) on it, near a line of riot police officers during a protest in Managua, Nicaragua August 26, 2015. (Photo by Oswaldo Rivas/Reuters)

An opposition supporter dressed as Nicaragua's first lady Rosario Murillo waves during a protest to demand what the demonstrators said should be fairer presidential elections next year, in front of the Supreme Electoral Council (CSE) building in Managua, Nicaragua, August 26, 2015. (Photo by Oswaldo Rivas/Reuters)

A man (R) and a woman chat during a protest held by the Amputee Coalition and the American Orthotic & Prosthetic Association in front of the Department of Health and Human Services in Washington, August 26, 2015. The group was protesting their concern over a Medicare rule proposal that would significantly impact care for two million amputees. (Photo by Gary Cameron/Reuters)

An AR-15 style rifle is displayed at the 7th annual Border Security Expo in Phoenix, Arizona, in this file photo taken March 12, 2013. Wal-Mart Stores Inc, the United States' top seller of guns and ammunition, said on Wednesday it would stop selling the AR-15 and other semi-automatic rifles stores because of sluggish demand and focus instead on “hunting and sportsman firearms”. (Photo by Joshua Lott/Reuters)

WDBJ reporter Alison Parker (L) is pictured interviewing Vicki Gardner in Moneta, Virginia August 26, 2015 moments before she was shot, in this combination of still images from video posted to the Facebook account of Bryce Williams. Parker and cameraman Adam Ward were both killed in the shooting incident. Gardner was reportedly also injured in the incident. (Photo by Reuters/Facebook)

A woman speaks with a journalist as she is overcome with emotions near a memorial outside of the offices for WDBJ7 in Roanoke, Virginia, August 26, 2015. Two television journalists were killed during a live broadcast in Virginia on Wednesday, shot by a suspect who was a former employee of the TV station and who called himself a “powder keg” of anger over what he saw as racial discrimination at work and elsewhere in the United States. The suspect, 41-year-old Vester Flanagan, shot himself as police pursued him on a Virginia highway hours after the shooting. Flanagan, who was African-American, died later at a hospital, police said. (Photo by Chris Keane/Reuters)

Egyptian President Abdel-Fattah el-Sissi, right, enters a hall for his talks with Russian President Vladimir Putin in the Kremlin in Moscow, Russia, Wednesday, August 26, 2015. The Egyptian president is visiting Moscow in a bid to revive relations with Russia which were traditionally warm in the Soviet times. (Photo by Alexander Zemlianichenko/AP Photo)

Investors monitor stock data on an electronic board at a securities brokerage house in Beijing, China, 26 August 2015. The benchmark Shanghai Composite Index closed down 1.27 per cent on 26 August despite fresh measures introduced after sharp stock plunges in previous days. The Shenzhen Component Index closed down 2.92 per cent while the ChiNext Index the ChiNext Index, which tracks tech and other growth enterprises, plunged 5.06 per cent. (Photo by Rolex Dela Pena/EPA)

The light installation “Cloud” by Canada's artists Caitlind r.c. Brown and Wayne Garrett is displayed at a street during the Bella Skyway Festival 2015 in Torun, Poland, 25 August 2015.The Festival has been organised in Torun since 2009 and its beginnings are connected with the fact that the town wants to become a European Capital of Culture 2016. The programme of this event is based on three pillars: science, art and people. Running from 25 to 30 August, the festival presents light-art installations and shows performed by artists from around the world. (Photo by Tytus Zmijewski/EPA)

Visitors look to the artwork “The Face of War” by Ukrainian artist Daria Marchenko, which depicts the Russian President Vladimir Putin, at the “M17 Contemporary Art Center” in Kiev, Ukraine, 25 August 2015. The Face of War – is the first picture in the series “Five Elements of War” which Daria Marchenko plans to create. About 5,000 cartridge cases of different calibres from different types of weapons from the eastern Ukrainian conflict zone were used for creating of this artwork. This work has the peculiarity of changing the colour and facial expressions depending on the light. (Photo by Roman Pilipey/EPA)

Cameramen float in the water filming Brazil's Gabriel Medina sticking out his tongue before competing in the World Surf league tour n°4, as part of the 2015 Billabong Pro Tahiti, along the Teahupo'o coast, western of the French polynesia island of Tahiti, on August 24, 2015. (Photo by Gregory Boissy/AFP Photo)