A rescue member (C) in full protective gear stands amongst South Korean soldiers wearing gas masks during an anti-terror drill on the sidelines of South Korea-US joint military exercise, called Ulchi Freedom, at a subway station in Seoul on August 23, 2016. South Korea and the United States kicked off large-scale military exercises on August 22, triggering condemnation and threats of a pre-emptive nuclear strike from North Korea

Jung Yeon-Je/AFP/Getty

A rescue member (C) in full protective gear stands amongst South Korean soldiers wearing gas masks during an anti-terror drill on the sidelines of South Korea-US joint military exercise, called Ulchi Freedom, at a subway station in Seoul

Iraqi security forces detain a boy after removing a suicide vest from him in Kirkuk, Iraq

Ako Rasheed/Reuters

Iraqi security forces detain a boy after removing a suicide vest from him in Kirkuk, Iraq

2016 Rio Olympics - Triathlon - Final - Men's Final - Fort Copacabana - Rio de Janeiro, Brazil - 18/08/2016. Alistair Brownlee (GBR) of Britain reacts

Damir Sagolj/Reuters

Alistair Brownlee of Great Britain wins the Triathlon at the 2016 Olympics at Fort Copacabana, Rio de Janeiro, Brazil

Indian people hold cremations along a roadside following heavy flooding at Daraganj ghat near Sangam in Allahabad

Sanjay Kanojia/AFP/Getty

Indian people hold cremations along a roadside following heavy flooding at Daraganj ghat near Sangam in Allahabad

An Indian priest dances as he carries a sacrificial goat during the Deodhani Festival at the Kamakhya Temple in Guwahati

Biju Boro/AFP/Getty

An Indian priest dances as he carries a sacrificial goat during the Deodhani Festival at the Kamakhya Temple in Guwahati

An Indian paramilitary trooper stands guard while he talks on a wireless set during a curfew in Srinagar

Tauseef Mustafa/AFP/Getty

An Indian paramilitary trooper stands guard while he talks on a wireless set during a curfew in Srinagar

A Turkish soldiers stands guard in front of the blast scene following a car bomb attack on a police station in the eastern Turkish city of Elazig

Ilyas Akenginilyas Akengin/Getty Images

A Turkish soldiers stands guard in front of the blast scene following a car bomb attack on a police station in the eastern Turkish city of Elazig

Yeong-min Lee and Jeong-Seok Mun,  two of the chaplinesque magicians from The Tricksters explore the inside of a perspective room at Edinburgh's Camera Obscura and World of Illusions during the Edinburgh Festival.

Jane Barlow/PA

Yeong-min Lee and Jeong-Seok Mun, two of the chaplinesque magicians from The Tricksters explore the inside of a perspective room at Edinburgh’s Camera Obscura and World of Illusions during the Edinburgh Festival

A man takes his seat as preparations are made for the maiden flight of the Airlander 10, the largest aircraft in the world, at Cardington airfield in Bedfordshire

Gareth Fuller/PA

A man takes his seat as preparations are made for the maiden flight of the Airlander 10, the largest aircraft in the world, at Cardington airfield in Bedfordshire

Boys aboard an abandoned boat collect recyclable items through polluted waters in front of fishing boats at Fish Harbor in Karachi, Pakistan

Akhtar Soomro/Reuters

Boys aboard an abandoned boat collect recyclable items through polluted waters in front of fishing boats at Fish Harbor in Karachi, Pakistan

A melted sign from a McDonald's restaurant shows the damage as firefighters check the area after a wildfire swept through Cajon Junction, California, USA, 16 August 2016. According to reports, the fast-moving Blue Cut Fire, which consumed so far some 6,500 acres with a zero percent containment, prompted the mandatory evacuation of the whole community of Wrightwood.

Eugene Garcia/EPA

A melted sign from a McDonald’s restaurant shows the damage as firefighters check the area after a wildfire swept through Cajon Junction, California

A farmer holds a sheep as sheep farmers gather at Lairg auction for the great sale of lambs on August 16, 2016 in Lairg, Scotland. Lairg market hosts the annual lamb sale, which is the biggest one day livestock market in Europe, when some twenty thousand sheep from all over the north of Scotland are bought and sold.

Jeff J Mitchell/Getty Images

A farmer holds a sheep as sheep farmers gather at the auction for the great sale of lambs in Lairg, Scotland. Lairg market hosts the annual lamb sale, which is the biggest one day livestock market in Europe, when some twenty thousand sheep from all over the north of Scotland are bought and sold

Editors note the photo is a composite of multiple camera RAW files. Undated Ministry of Defence handout photo of RAF Falcons taking to the sky performing aerial acrobatics to a packed crowd at RAF Henlow families day, taken by Shay Woods, which has been shortlisted for the general public to pick their favourite RAF Image of the Year. PRESS ASSOCIATION Photo. Issue date: Tuesday August 16, 2016.

Shay Woods/MoD Crown Copyright/PA

RAF Falcons take to the sky at RAF Henlow families day, taken by Shay Woods, which has been shortlisted for the RAF Image of the Year. Please note the photo is a composite of multiple camera RAW files.

A dog with Indonesian national flags on his head walks during a parade a day before Indonesia Independence Day at Kuta on Indonesia's resort island of Bali

Sonny Tumbelaka/AFP/Getty

A dog with Indonesian national flags on his head walks during a parade a day before Indonesia Independence Day at Kuta on Indonesia’s resort island of Bali

Divers and fishermen carry the image of the Virgin of Palm as a girl touch it at El Rinconcillo beach during the yearly Virgin of Palm maritime pilgrimage on August 15, 2016 in Algeciras, Spain. The Our Lady of Palm maritime pilgrimage in Algeciras dates back to 1975 and takes place annually when fishermen rescue the submerged virgin from the deep sea. Worshippers amid thousands of visitors await its arrival at the Rinconcillo beach. The devotion for the Virgin of Palm comes from the seventeenth century when a ship coming from Italy docked at Algeciras port to wait out bad weather.

Pablo Blazquez Dominguez/Getty Images

Divers and fishermen carry the image of the Virgin of Palm as a girl touch it at El Rinconcillo beach during the yearly Virgin of Palm maritime pilgrimage 2016 in Algeciras, Spain.

A Thai dancer performer uses her mobile phone at the Erawan Shrine in Bangkok, Thailand. A bomb exploded at the Erawan Shrine on 17 August 2015 and killed 20 people and injured more than 100 while two foreign bomb suspect were arrested and under trial by the Thai military court. A series of bomb attacks on 12 August 2016 in major popular tourist towns killing four people and more than 20 people injured including foreign tourists will shake Thailand's tourism industry

Rungroj Yongrit/EPA

A Thai dancer performer uses her mobile phone at the Erawan Shrine in Bangkok, Thailand

A truck is seen in a flooded parking lot on August 15, 2016 in Denham Springs, Louisiana.

Brendan Smialowski/AFP/Getty

A truck is seen in a flooded parking lot in Denham Springs, Louisiana

A French police officer stands guard by Notre Dame Cathedral in Paris as people queue for the mass for the feast of the Assumption

Alain Jocard/AFP/Getty

A French police officer stands guard by Notre Dame Cathedral in Paris as people queue for the mass for the feast of the Assumption

Sudanese children play in mud in the village of Makli that was flooded as the river Gash burst its banks

Ashraf Shazly/AFP

Sudanese children play in mud in the village of Makli that was flooded as the river Gash burst its banks

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