A member of the US Secret Service stands guard as Marine One carrying US President Barack Obama lands at Walter Reed National Medical Center in Bethesda, Maryland, USA, 26 August 2016. President Obama is visiting with wounded and ill soldiers and their families at the Medical Center. (Photo by Mark Wilson/EPA)





A child waves toward Turkish troops heading to the Syrian border, in Karkamis, Turkey, Friday, August 26, 2016. Turkey's state-run Anadolu news agency said late Thursday Turkish artillery have shelled a group of Syrian Kurdish militia fighters in the north of the town of Mambij after they allegedly ignored warnings to retreat. (Photo by Halit Onur Sandal/AP Photo)





Over 50 robots dance during the opening ceremony of the sixth Shandong Cultural Industries Fair (SDCIF) at Jinan International Convention & Exhibition Center on August 25, 2016 in Jinan, Shandong Province of China.The 50 robots are named “Alpha” and are connected to cellphones instructing them to perform different actions according to various musical sounds. (Photo by VCG/Getty Images)





Smoke still rises from the scene after Kurdish militants attacked a police checkpoint in Cizre, southeast Turkey, Friday, August 26, 2016, with an explosives-laden truck, killing several police officers and wounding dozens more, according to reports from the state-run Anadolu news agency. The attack struck the checkpoint some 50 meters (yards) from a main police station near the town of Cizre, in the mainly-Kurdish Sirnak province that borders Syria. Turkish authorities have put a temporary ban on distribution of images relating to Friday's Cizre attack within Turkey. (Photo by DHA via AP Photo)





Miami Dolphins players take the field before an NFL preseason football game against the Atlanta Falcons in Orlando, Fla., Thursday, August 25, 2016. (Photo by John Raoux/AP Photo)





Two-time World Medieval Jousting champion Rod Walker poses for a photograph on his horse “Crusader” in Sydney, Australia, August 26, 2016. Walker is in Sydney training for the jousting tournament at the upcoming St Ives Medieval Faire, the only solid wood lance joust tournament in the southern hemisphere, which will take place on the September 24-25. (Photo by Dan Himbrechts/Reuters/AAP)





World medieval jousting champion Rod Walker poses before next month’s St Ives Medieval Faire, the only solid wood lance joust tournament in the southern hemisphere in Sydney, Australia on August 26, 2016. (Photo by Dan Himbrechts/AAP)





Australian Rod Walker, two time world medieval jousting champion, poses for a photograph in Sydney, Australia, 26 August 2016. Walker is in Sydney training for the jousting tournament at the upcoming St Ives Medieval Faire, the only solid wood lance joust tournament in the southern hemisphere, which will take place from 24 to 25 September. (Photo by Dan Himbrechts/EPA)





The covers of hay bales near Salisbury, Dorset, UK are painted in support of breast cancer research on August 26, 2016. (Photo by Geoffrey Swaine/Rex Features/Shutterstock)





Indian cadets jump during an obstacle course at an Officers Training Academy in Chennai, August 26, 2016, where India's President Pranab Mukherjee is scheduled to review a passing out parade of cadets in September. (Photo by Arun Sankar/AFP Photo)





Mount Sinabung spews volcanic ashes as a villager cleans a mosque in Brastagi, Karo, North Sumatra, Indonesia, 26 August 2016. According to local media, the volcanic earthquake has continued to occur with eruptions of the ash cloud as 3.000 meters height. Indonesian military help vilagers to leave the red zone. (Photo by Y.T. Haryono/EPA)





A villager harvests tomatoes covered in ashes from the eruption of Mount Sinabung at Namanteran village in Karo district of North Sumatra province on August 26, 2016. Indonesia, which sits on a belt of seismic activity running around the basin of the Pacific Ocean, is home to around 130 active volcanoes. Eruptions regularly disrupt air travel around the archipelago. (Photo by Y.T. Haryono/AFP Photo)





Members of the Serpentine Swimming Club dive into the water for an early morning swim in the Serpentine Lake in London, Britain, 26 August 2016. The Serpentine Swimming Club, founded more than 140 years ago, allows its members to enjoy a swim in the Serpentine Lake in central London's Hyde Park. (Photo by Hannah Mckay/EPA)





Filipino demonstrators (foreground) mimic an extrajudicial killing crime scene as police officers stand guard during a protest in front of the Philippine National Police (PNP) headquarters in Camp Crame, Quezon City, northeast of Manila, Philippines, 26 August 2016. According to police data which was submitted to a Senate investigation on 23 August by PNP Director General Ronald Dela Rosa, at least 756 people were slain during anti-drug police operations and 1,160 more deaths were committed by still unknown assailants based on a tally from 01 July to 23 August, putting the overall toll of lives at 1,916 or an average of 36 deaths per day, killed in a violent campaign against drugs in the Philippines since President Rodrigo Duterte took office, the country's national police chief said. (Photo by Mark R. Cristino/EPA)





Bolivian policemen clash with miners near a blocked road in Panduro, Bolivia, 25 August 2016. The miners, the majority of whom are members of the National Federation of Mining Cooperatives of Bolivia (FENCOMIN) organized the indefinite strike to demand amendments to the Mining Act, as well as improvements in working conditions and pay, among other concessions. According to media reports, there has been at least one casualty during the clashes, as Bolivian Deputy Interior Minister Rodolfo Illanes was allegedly beaten to death by a group of mineworkers. (Photo by Martin Alipaz/EFE)





Relatives and miner friends mourn the body of Fermin Mamani, one of the protester miners who died allegedly after clashes with the police, in a central route between La Paz and Cochabamba, during a three day block by workers whom oppose a union bill promoted by Bolivian President, Evo Morales, Sayari, Cochabamba department, on 25 August 2016. The conflict escalated after this Wednesday the main union of the protest Fencoming, denounced that two miners died from gun wounds during clashes with the Bolivian police. The Bolivian Government said in an official statement that only one died. (Photo by Jorge Abrego/EFE)





Independent miners clash with the police as they run from clouds of tear gas during protests in Panduro, Bolivia, Thursday, August 25, 2016. Government officials said that the striking miners kidnapped and beat to death the country’s deputy interior minister after he traveled to the area to mediate in the bitter conflict over mining laws. Government Minister Carlos Romero called it a “cowardly and brutal killing” and asked that the miners turn over the body of his deputy, Rodolfo Illanes. (Photo by Juan Karita/AP Photo)





An independent miner returns a tear gas capsule during clashes with riot police during a protest against Bolivia's President Evo Morales' government policies, in Panduro south of La Paz, Bolivia, August 25, 2016. (Photo by Reuters/APG Agency)





A handout picture made available by Syrian arab news agency SANA shows Syrian citizens inspect the damages caused by several rocket that hit some residential neighborhoods in the northern city of Aleppo, Syria, on 25 August 2016. According to media reports, the rounds killed at least six civilians and wounded 34 others, some critically. (Photo by EPA/SANA)





Syrian government troops are seen reflected on the window of a bus carrying people as part of an evacuation from the town of Daraya outside the capital Damascus on August 26, 2016, under a deal agreed between the government and opposition fighters after a four-year army siege. State news agency SANA, which announced the deal on Thursday, said 700 rebels and their families would go to rebel-controlled Idlib and thousands of civilians would be taken to government reception centres. (Photo by Youssef Karwashan/AFP Photo)





Syrian army soldiers rest in a street in the government-controlled part of the besieged town of Daraya on August 26, 2016, as thousands of rebel fighters and civilians prepared to evacuate under an accord struck a day earlier. An estimated 8,000 people remain in the town, despite a government siege lasting four years and regular regime bombardment. (Photo by Youssef Karwashan/AFP Photo)





A picture made available on 26 August 2016 shows Florian Palatz, advisor to the project “Open Piano for Refugees”, playing a piano in the harbor of Lindau, Germany, 25 August 2016. As part of the project people will be invited to play the instrument, which will be made available from 25 to 28 August 2016. Donations for the performances will go to music projects with refugees. (Photo by Karl-Joself Hildenbrand/EPA)





A photo made available 26 August 2016 shows a worker processing endangered hammerhead shark fins at small factory on top of a residential building in Kennedy Town, Western District, Hong Kong, China, 24 August 2016. The Red List of Threatened Species of the International Union for the Conservation of Nature (IUCN) assesses two sub-species of hammerhead shark as “Endangered” and one sub-species as “Vulnerable”. Under Hong Kong law, hammerhead shark fins can still be traded and possessed legally, but unlicensed food kitchens situated on top of residential tower block rooftops are illegal. (Photo by Alex Hofford/EFE)





A plane drops fire retardant onto a forest fire near to the small village of Artajona, around 40 kilometers (27m miles), from Pamplona northern Spain, Friday, August 26, 2016. Every year, Spain suffers several forest fires during the summer season. (Photo by Alvaro Barrientos/AP Photo)





A wildfire burns near the village of Tafalla, Navarra, northern of Spain on 25 August 2016. The fire has burnt 2,000 hectares. (Photo by Jesus Diges/EPA)





A picture made available on 26 August 2016 shows a farmer plowing the soil of a field and kicking up dust, near Treplin, Germany, 25 August 2016. (Photo by Patrick Pleul/EPA)





A man stands next to a car with impacts of bullets next to the beach restaurant in the capital Mogadishu on August 26, 2016 one day after an attack by alleged Al-Qaeda-linked Shebab rebels killed nine people including the assailants, according to Mogadishu city spokesman Abdifatah Halane. Al-Qaeda-linked Shebab rebels attacked a beachfront restaurant in the Somali capital Mogadishu on August 25, setting off a car bomb before exchanging fire with security forces, an AFP correspondent said. The Al-Qaeda-linked Shabaab group claimed responsibility for the attack through the website of their Andalus radio station. (Photo by Mohamed Abdiwahab/AFP Photo)





US Secretary of State John Kerry (L) and Russian Foreign Minister Sergei Lavrov (R) met on August 26, 2016 in Geneva for an expected push towards resuming peace talks for war-ravaged Syria. Successive rounds of international negotiations have failed to end a conflict which has killed more than 290,000 people and forced millions from their homes. (Photo by Martial Trezzini/AFP Photo)





In this Thursday, August 25, 2016 photo, rescue personnel help at the scene where a small plane crashed into a house a few miles north of Terre Haute, Ind., near Sky King Airport. Authorities say two people were rescued from the plane wreckage and flown to a hospital. A resident says no one was inside the house when the plane struck. (Photo by Jim Avelis/The Tribune-Star via AP Photo)





Mexican regional dancers perform in front of a mosaic made with Mexican traditional hats, during a Guinness record ceremony to the world's largest mosaic made with hats, in Guadalajara, Mexico, on August 26, 2016. The mosaic was made with more than a thousand hats and measures ten meters high. (Photo by Hector Guerrero/AFP Photo)