Bronze medalist Carlos Coloma Nicolas of Spain celebrates after finishing third in the cross-country cycling mountain bike race at the 2016 Summer Olympics in Rio de Janeiro, Brazil, Saturday, August 20, 2016. (Photo by Patrick Semansky/AP Photo)

Vladimir Putin looks at a model of the Tupolev TU-160 bomber, or Blackjack, that was presented to him on his arrival in Olenegorsk, Russia, August 16, 2005. Putin flew in the Tupolev TU-160 bomber and took part in the launch of cruise missiles in the Arctic north. (Photo by Reuters/ITAR-TASS/Presidential Press Service)

A Grevy’s zebra gets itself noticed at ZSL Whipsnade Zoo in Whipsnade, England on April 20, 2018. (Photo by Tony Margiocchi/Barcroft Media)

Russian President Vladimir Putin aims a sniper rifle during a visit to the Patriot military exhibition center outside Moscow, Russia, Wednesday, September 19, 2018. Putin chaired a meeting that focused on new arms programs. (Photo by Alexei Nikolsky/Sputnik/Kremlin Pool Photo via AP Photo)

A view of Worker and Kolkhoz Woman, a sculpture by Vera Mukhina, at the main entrance to Moscow's VDNKh exhibition center in Moscow, Russia on September 27, 2017. (Photo by Dmitry Serebryakov/TASS/Barcroft Images)

People on inflatable boats enjoy the weather on the Lake Lucerne in Sisikon, Switzerland, August 5, 2018. (Photo by Denis Balibouse/Reuters)

U.S. President Donald Trump boards Air Force One to depart for Vietnam from Beijing Airport in Beijing, China on November 10, 2017. (Photo by Jonathan Ernst/Reuters)

Dutch driver Hans Jos Liefhebber on his KTM drives next to a seal during the fifth stage of the 2018 Dakar Rally, between San Juan de Marcona and Arequipa, on the beach of Puerto Lomas, Peru, 10 January 2018. The 2018 Dakar says goodbye to the dunes with its fifth and final stage over the Peruvian desert and begins to take height as it enters the Andean mountain range, heading for Bolivia. (Photo by David Fernandez/EPA/EFE)