A Buddhist monk poses next to unexploded bombs dropped by the U.S. Air Force planes during the Vietnam War, in Xieng Khouang in Laos, September 3, 2016. Photo by Jorge Silva

U.S. President Barack Obama visits the Cooperative Orthotic and Prosthetic Enterprise (COPE) for victims of amputations due to accidents with the many rounds of unexploded ordnance remaining in the Laotian countryside following the Vietnam War era, on the sidelines of the ASEAN Summit, in Vientiane, Laos September 7, 2016. Photo by Jonathan Ernst

People stand at the site of a Saudi-led air strike in the Red Sea port city of Houdieda, Yemen, September 5, 2016. Photo by Abduljabbar Zeyad

Refugees and migrants make their way at the Souda municipality-run camp, on the island of Chios, Greece, September 7, 2016. Photo by Alkis Konstantinidis

A man walks at a destroyed building at the site of a blast caused by a fire at a weapons storage in eastern Baghdad, Iraq, September 2, 2016. Photo by Ahmed Saad

U.S. President Barack Obama (R) tracks down Turkey’s President Tayyip Erdogan (2nd L) for a brief private conversation after they gave remarks to reporters following their bilateral meeting alongside the G20 Summit in Hangzhou, China, September 4, 2016. Photo by Jonathan Ernst

Mexico’s President Enrique Peña Nieto shakes hands with former Finance Minister Luis Videgaray as Interior Minister Miguel Angel Osorio Chong looks on during the announcement of new cabinet members at Los Pinos presidential residence in Mexico City, Mexico, September 7, 2016. Photo by Edgard Garrido

Star Trek fan Alex Reventlow poses for a picture while in the captain’s chair of a Star Trek set at the «Star Trek: Mission New York» convention in New York, U.S., September 2, 2016. Photo by Mark Kauzlarich

Brazil’s former President Dilma Rousseff is greeted by supporters as she leaves the Alvorada Palace, the presidential residence, after a vote in Brazil’s Senate stripped Rousseff of the presidency, in Brasilia, Brazil, September 6, 2016. Photo by Adriano Machado

A 120-meter long model of the 17th century London skyline is set alight on the River Thames to commemorate the 1666 Great Fire of London in London, Britain, September 4, 2016. Photo by Neil Hall

Flames of a wildfire engulf a hillside next to houses in Benitatxell near Alicante, Spain, September 5, 2016. Photo by Heino Kalis

General view of Kaaba at the Grand mosque in Mecca during Friday prayers, September 9, 2016. Photo by Ahmed Jadallah

The Soyuz TMA-20M spacecraft capsule carrying International Space Station (ISS) crew, comprised of Jeff Williams of the U.S. and Oleg Skriprochka and Alexey Ovchinin of Russia, descends beneath a parachute near the town of Zhezkazgan (Dzhezkazgan), Kazakhstan, September 7, 2016. Photo by NASA

Downed trees and power lines block the road after Hurricane Hermine blows through Tallahassee, Florida. September 2, 2016. Photo by Phil Sears

Idols of the Hindu god Ganesh, the deity of prosperity, are transported to places of worship on the first day of the Ganesh Chaturthi festival in Mumbai, India, September 5, 2016. Photo by Danish Siddiqui