Ukrainians dressed in traditional embroidered clothing, sing folk songs during Midsummer Night pagan celebrations in Kiev, Ukraine late Monday, July 6, 2015. The age-old pagan Slav festival is still celebrated in Ukraine and many people believe that jumping over the fire cleanses them of evil spirits. (Photo by Efrem Lukatsky/AP Photo)

A Ukrainian couple jump over a fire during a traditional Midsummer Night celebration near Kiev, Ukraine, late Monday, July 6, 2015. (Photo by Efrem Lukatsky/AP Photo)

A man dressed as a Cossack stands next to his horse during a traditional Midsummer Night celebration near Kiev, Ukraine late Monday, July 6, 2015. (Photo by Efrem Lukatsky/AP Photo)

A girl with a ritual garland on her head poses for a photograph during a traditional Midsummer Night celebration, near the capital Kiev, Ukraine, Monday, July 6, 2015. (Photo by Efrem Lukatsky/AP Photo)

A Ukrainian couple jump over a fire during traditional Midsummer Night celebrations near Kiev, Ukraine, Monday, July 6, 2015. (Photo by Efrem Lukatsky/AP Photo)

Models present creations by Hong Kong designer Walter Kong during the Spring/Summer fashion week in Hong Kong, Monday, July 6, 2015. (Photo by Vincent Yu/AP Photo)

A man carries an injured child found in the rubble after an Iraqi Sukhoi jet accidentally dropped a bomb in Ni'iriya district in Baghdad July 6, 2015. The Iraqi plane accidentally dropped the bomb on an eastern Baghdad neighbourhood on Monday, police and residents said, killing at least five people and destroying several houses. The Sukhoi jet had been taking part in an air strike against Islamic State militants, Iraqi television said. One of its bombs failed to detach from the plane during the mission then fell as the plane was returning to base. (Photo by Reuters/Stringer)

Red spray paint covers a French-language Bank of Greece sign to read “Bank of Merkel” in reference to German Chancellor Angela Merkel in Athens, Monday, July 6, 2015. Greek Finance Minister Yanis Varoufakis resigned Monday, saying he was told shortly after Greece's decisive referendum result that some other eurozone finance ministers and the country's other creditors would appreciate his not attending the ministers' meetings. (Photo by Thanassis Stavrakis/AP Photo)

Brian Scott (33) goes under Carl Edwards (19) as they wreck in turn 2 during a NASCAR Sprint Cup series auto race at Daytona International Speedway, Monday, July 6, 2015, in Daytona Beach, Fla. (Photo by John Moore/AP Photo)

Pope Francis (C) is greeted by Ecuador's President Rafael Correa (R) and his wife Anne Malherbe Gosseline (L) after he landed in Quito, Ecuador, July 5, 2015. Pope Francis landed in Ecuador's capital Quito on Sunday to begin an eight-day tour of South America that will also include visits to Bolivia and Paraguay. On his first visit as pontiff to Spanish-speaking Latin America, the Argentina-born pope is scheduled to conduct masses in both Quito and the coastal city of Guayaquil before flying to Bolivia on Wednesday. (Photo by Alessandro Bianchi/Reuters)

A man kisses Pope Francis's ring as he leaves aboard a small car the Mariscal Sucre international airport in Quito on July 5, 2015. Pope Francis arrived in Quito Sunday to begin his first South American trip in two years, for an eight-day tour of Ecuador, Bolivia and Paraguay highlighting the plight of the poor on his home continent. (Photo by Rodrigo Buendia/AFP Photo)

Pope Francis waves to the crowd of faithfuls upon his arrival at Parque Samanes where he will celebrate mass in Guayaquil, Ecuador, July 6, 2015. Camped on streets with sleeping bags and stocked with food supplies, thousands of excited Ecuadoreans congregated in the coastal city of Guayaquil on Monday for Pope Francis' first mass of his “homecoming” tour of South America. (Photo by Jose Miguel Gomez/Reuters)

Members of the “Mujeres Creando” (Women Creating) activist women group dressed as nuns who were protesting against the upcoming visit of Pope Francis to Bolivia, are taken away by police in front of the Metropolitan Cathedral in La Paz, on July 6, 2015. Pope Francis, in South America on a three-nation tour, will perform mass in Ecuador Monday, with more than a million faithful – many of whom camped out overnight – expected to attend. (Photo by Jorge Bernal/AFP Photo)

WHM Motorsports (L), piloted by William Mauff and Jay Muller, maintain a lead over Team Amsoil, with Bob Teague and Paul Whitier at the controls, during the Superboat class at the Marathon Super Boat Grand Prix in Marathon, Florida July 5, 2015. (Photo by Bob Care/Reuters/Florida Keys News Bureau)

Riot police stands along a street during minor clashes in central Athens, Greece July 6, 2015. Greeks voted overwhelmingly “No” on Sunday in a historic bailout referendum, partial results showed, defying warnings from across Europe that rejecting new austerity terms for fresh financial aid would set their country on a path out of the euro. (Photo by Marko Djurica/Reuters)

Women take part in a gay pride parade in Santo Domingo in the Dominican Republic July 5, 2015. (Photo by Ricardo Rojas/Reuters)

A reveller dances during a gay pride parade in Santo Domingo in the Dominican Republic July 5, 2015. (Photo by Ricardo Rojas/Reuters)

Revellers take part in a gay pride parade in Santo Domingo in the Dominican Republic July 5, 2015. (Photo by Ricardo Rojas/Reuters)

Revellers take part in a gay pride parade in Santo Domingo, in the Dominican Republic July 5, 2015. (Photo by Ricardo Rojas/Reuters)

Staff of a tourism resort dressed as Japanese soldiers squirt water guns as they take part in a mock fight with children visitors during an event to mark the 70th anniversary of the end of the Sino-Japan War, in Binzhou, Shandong province, China, July 5, 2015. (Photo by Reuters/Stringer)

A staff of a tourism resort dressed as Japanese soldiers squirts water guns as he takes part in a mock fight with children visitors during an event to mark the 70th anniversary of the end of the Sino-Japan War, in Binzhou, Shandong province, China, July 5, 2015. (Photo by Reuters/Stringer)

Staff of a tourism resort dressed as Japanese soldiers raise their water guns to surrender as they take part in a mock fight with children visitors during an event to mark the 70th anniversary of the end of the Sino-Japan War, in Binzhou, Shandong province, China, July 5, 2015. (Photo by Reuters/Stringer)

A U.S. Marine takes photographs of a South Korean army's K-55 self-propelled artillery vehicle getting out of a barge during the Combined Joint Logistics Over The Shore (CJLOTS) exercise, at a seashore in Taean, South Korea, July 6, 2015. (Photo by Kim Hong-Ji/Reuters)

Pensioners are given priority tickets as they wait to receive part of their pensions at a National Bank branch in Athens, Greece, July 6, 2015. Greeks overwhelmingly rejected conditions of a rescue package from creditors on Sunday, throwing the future of the country's euro zone membership into further doubt and deepening a standoff with lenders. (Photo by Christian Hartmann/Reuters)

Austin Dillon (3) goes airborne as he was involved in a multi-car crash on the final lap of the NASCAR Sprint Cup series auto race at Daytona International Speedway, Monday, July 6, 2015, in Daytona Beach, Fla. (Photo by Stephen M. DoweLl/The Orlando Sentinel via AP Photo)

NASCAR Sprint Cup Series driver Austin Dillon's car (3) crashes against the catch fence during the finish of the Coke Zero 400 at Daytona International Speedway on July 6, 2015. (Photo by Reinhold Matay/USA TODAY Sports)

A fisherman checks his net for fresh catch amidst bad weather at Laguna de Bay, in Paranaque, Metro Manila July 6, 2015. All shipping was ordered to remain in harbour and some flights were cancelled in the northern Philippines, while schools were closed in the capital, Manila, on Monday due to flooding and landslides from a tropical storm, disaster officials said. Storm warnings were issued in at least 14 areas of the main Philippine island of Luzon as tropical storm Linfa moved slowly across the north of the Southeast Asian archipelago. It was carrying maximum wind gusts of 100 km per hour. (Photo by Erik De Castro/Reuters)

An aerial view shows a man jogging along a road inside the Danxia National Geological Park, in Zhangye, Gansu province, China, July 5, 2015. The national geological Park, covering an area of 510 square kilometres, is known for its colorful and special rock formations. (Photo by Sheng Li/Reuters)

An aerial view shows people traveling along a road inside the Danxia National Geological Park, in Zhangye, Gansu province, China, July 5, 2015. (Photo by Sheng Li/Reuters)

A policeman removes a barricade built with garbage bins by protesters against a hike in electricity prices in Yerevan, Armenia, July 6, 2015. Police forces pushed protesters from the main avenue after a standoff lasting two weeks, local media reported. (Photo by Hayk Baghdasaryan/Reuters/Photolure)

Workers dismantle the large Euro sign sculpture for maintenance, in front of the headquarters of the former European Central Bank (ECB) in Frankfurt, July 6, 2015. The large blue and yellow sculpture was made by German artist Ottmar Hoerl in 2001. (Photo by Ralph Orlowski/Reuters)

The new first class seats aboard an Etihad Airways Boeing 787 Dreamliner passenger jet are pictured during a media presentation at Zurich airport near the town of Kloten July 6, 2015. (Photo by Arnd Wiegmann/Reuters)

A Kashmiri Muslim woman offers prayers inside Jamia Masjid during the holy month of Ramadan in Srinagar July 6, 2015. (Photo by Danish Ismail/Reuters)

Guards walk through a damaged gate of the house of Brigadier Khaled al-Anduli, an army commander loyal to the Houthi movement, after it was hit by Saudi-led air strikes in Yemen's capital Sanaa July 6, 2015. Yemen's exiled government said on Monday it expects a deal shortly on a humanitarian ceasefire that would run through the Muslim Eid al-Fitr holiday later this month, as the capital Sanaa came under renewed air strikes. (Photo by Khaled Abdullah/Reuters)

A woman dips her head into a fountain in Budapest, Hungary July 6, 2015. Over the weekend, a heat wave has reached Hungary with temperatures topping 38 degrees Celsius (100.4 degrees Fahrenheit). (Photo by Laszlo Balogh/Reuters)

A young woman cools herself in a fountain in Budapest, Hungary July 6, 2015. (Photo by Laszlo Balogh/Reuters)

This 16-second time exposure shows a wildfire that might have been started by fireworks and burned more than 320 acres while threatening homes in the Northern California city of Vacaville, in the early morning hours of Sunday, July 5, 2015. The fire started Saturday night and embers were quickly spread by winds that gusted to 40 mph. Several homes were threatened and 125 people voluntarily evacuated, but no structures were burned. (Photo by Matthew Henderson/Vacaville Reporter via AP Photo)

Lotto-Jumbo rider Laurens ten Dam of the Netherlands lies on the ground after a fall during the 159,5 km (99 miles) third stage of the 102nd Tour de France cycling race from Anvers to Huy, Belgium, July 6, 2015. (Photo by Benoit Tessier/Reuters)

A doctor tends to William Bonnet of France after he crashed with several other riders during the third stage of the Tour de France cycling race over 159.5 kilometers (99.1 miles) with start in Antwerp and finish in Huy, Belgium, Monday, July 6, 2015. Bonnet abandoned the race following the crash. (Photo by Christophe Ena/AP Photo)

Scores of riders lie on the road after crashing during the third stage of the Tour de France cycling race over 159.5 kilometers (99.1 miles) with start in Antwerp and finish in Huy, Belgium, Monday, July 6, 2015. (Photo by Christophe Ena/AP Photo)

William Bonnet of France holds his head after crashing with scores of other riders during the third stage of the Tour de France cycling race over 159.5 kilometers (99.1 miles) with start in Antwerp and finish in Huy, Belgium, Monday, July 6, 2015. (Photo by Christophe Ena/AP Photo)

Conservation officials look on as they burn 2.5 tonnes of seized ivory and rhino horn in Maputo, July 6, 2015. Mozambique burned the haul as part of a campaign to end an illicit trade that is fueling a wave of big animal poaching in Africa, a conservation group said. The Wildlife Conservation Society (WCS) said in a statement that over 2,400 kgs (5,280 lbs) of ivory and 86 pieces of rhino horn weighing 193.5 kgs were put to the torch, in the first major destruction of rhino horn ever. (Photo by Grant Lee Neuenburg/Reuters)

Diamond Trusty cries in grief over the death of her cousin, 7-year-old Amari Brown in Chicago, Illinois, United States, July 5, 2015. Extra police patrols and long shifts were not enough to prevent nine deaths and about 50 injuries from gun violence in Chicago over the Fourth of July weekend, when homicides jump almost every year. Chicago, with 2.7 million people, is the most violent large city in the United States, with poverty, segregation, dozens of small street gangs, and a pervasive gun culture all contributing to the problem. (Photo by Jim Young/Reuters)

Los Angeles County Sheriff deputies assist with the destruction of approximately 3,400 weapons during the 22nd Annual Gun Melt in Rancho Cucamonga, California July 6, 2015. The confiscated weapons by Los Angeles County and ten participating law enforcement agencies will be melted down to convert the weapons into construction steel rebars for use in local highways and bridges. (Photo by Bob Riha, Jr./Reuters)

A model poses before the presentation of creations by Italian designer Giambattista Valli as part of his Haute Couture Fall Winter 2015/2016 fashion show in Paris, France, July 6, 2015. (Photo by Stephane Mahe/Reuters)

Iraq's Shi'ite paramilitaries launch a rocket towards Islamic State militants at North of Fallujah in province of Anbar, July 6, 2015. (Photo by Reuters/Stringer)

A child rests on the back of a water buffalo in the Diyala River in Baghdad, Iraq, Monday, July 6, 2015. The animals are bathed daily to help keep them free of diseases and to protect them from the heat. (Photo by Hadi Mizban/AP Photo)

Children swim and wash water buffalo in the Diyala River in Baghdad, Iraq, Monday, July 6, 2015. (Photo by Hadi Mizban/AP Photo)

A veiled Egyptian woman poses for a picture as she sits outside her home situated at a cemetery in the so-called City of the Dead, a slum where half a million people live among tombs in Cairo, Egypt, Monday, July 6, 2015. (Photo by Hassan Ammar/AP Photo)

An unidentified guest arrives for the presentation of Christian Dior's Fall-Winter 2015-2016 Haute Couture collection, Monday July 6 2015 in Paris, France. (Photo by Rafael Yaghobzadeh/AP Photo)

In this June 18, 2015 photo, a gold bar sits on display in New York. The bar, which was just a portion of 40 tons of gold and silver pulled from the 400-year-old Spanish galleon Nuestra Senora de Atocha wreckage, will be one of forty select items from the ship auctioned off by Guernsey's next month. (Photo by Julie Jacobson/AP Photo)