Cars are parked near Place de la Concorde on March 12, 2014 in Paris, France. Inset: World War I, German airplanes at Place de la Concorde in Paris, wrecked by celebrating crowds on the day of the restoration of Alsace-Lorraine, November 18, 1918. (Photo by Peter Macdiarmid/Getty Images)

A girl with Russian national flags painted on her cheeks takes part in celebrations marking the first anniversary of Russia's annexation of Crimea, in central Simferopol March 16, 2015. Russia marks one year anniversary of annexation of Ukraine's Crimea peninsula this week. (Photo by Maxim Shemetov/Reuters)

A hot air-balloon flies during the International Lorraine Mondial Air Balloons Festival, in Chambley-Bussieres, eastern France, Friday, July 26, 2013. (Photo by Mathieu Cugnot/AP Photo)

“Hellfest is an annual music festival which takes place in Clisson, France in mid-June. It is held within the Val de Moine sport complex in Clisson, approximately 35 km south-east of the city of Nantes, and approximately 400 km south-west of the nation's capital Paris. Billed as an “extreme music festival”, the programme features a variety of heavy metal, hard rock, punk and hardcore acts”. – Wikipedia. Photo: HellFest 2013. (Photo by Cesar Hernandez)

An injured supporter of Ivory Coast's Laurent Gbagbo reacts outside the premises of Hotel Golf, where Gbagbo is currently being held after his arrest, in Abidjan April 11, 2011. The trial of Laurent Gbagbo on charges of crimes against humanity during post-election violence, in which around 3,000 people were killed, will begin on January 28, 2016 at the International Criminal Court. (Photo by Reuters/Stringer)

A Sri Lankan leopard is pictured at a zoo in Dehiwala near Colombo on March 3, 2016, on World Wildlife Day. (Photo by Ishara S. Kodikara/AFP Photo)

An aerial view taken with a drone shows the autumnally colored Fuerst-Pueckler-Park near Cottbus, eastern Germany, Saturday, October 29, 2016. The park, composed with great sensitivity in the 19th century by Prince Hermann von Pueckler-Muskau, is considered as one of the last great German landscape gardens. (Photo by Patrick Pleul/DPA via AP Photo)

Students participate in a wet t-shirt contest at the MTV Beach Bash party put on by Global Groove at the Bahia Mar Hotel during the annual ritual of Spring Break March 26, 2008 on South Padre Island, Texas. The South Texas island is one of the top Spring Break destinations and attracts students from all over the country. (Photo by Rick Gershon/Getty Images)