Participants ride horses, hold spears and wear historic armoured suits of the Middle Ages as they compete during the Saint George international knight tournament in Moscow, Russia, May 3, 2015. (Photo by Maxim Zmeyev/Reuters)

U.S. Marines, left, and South Korean Marines, wearing blue headbands on their helmets, take positions after landing on the beach during the joint military combined amphibious exercise, called Ssangyong, part of the Key Resolve and Foal Eagle military exercises, in Pohang, South Korea, Saturday, March 12, 2016. North Korea said Saturday its military is ready to pre-emptively attack and “liberate” the South in its latest outburst against the annual joint military drills by the United States and South Korea. (Photo by Kim Jun-bum/Yonhap via AP Photo)

Chloe Goodman attending the Fantastic Beasts and Where to Find Them European Premiere at Leicester Square, London. (Photo by Ian West/PA Images via Getty Images)

A Common seal named Groot is prepared for release in a transfer cage at Seal Rescue Ireland wildlife sanctuary where two rescued and rehabilitated seals are released back into the sea after months of care in Wexford, Ireland, June 12, 2016. (Photo by Clodagh Kilcoyne/Reuters)

Children wearing uniforms hold toy guns during a military parade game on China's National Day, at Beyou World, a centre children where can experience different kinds of professions, in Beijing, October 1, 2015. (Photo by Reuters/Stringer)

A glass skywalk in Wanyuan, Sichuan province, built along the side of a cliff, is the highest such skywalk anywhere in China on January 31, 2017. Some visitors have been proven to be terrified by the experience had to brace against the wall in fear. (Photo by Chinanew.com/AsiaWire)

North Korean soldiers wave along the Yalu River, near the North Korean town of Sinuiju, opposite to the Chinese border city of Dandong October 7, 2014. (Photo by Jacky Chen/Reuters)

Pistachio, a puppy who was born with green fur, is seen on the day he was born on a farm on the island of Sardinia, in Pattada, Italy, October 9, 2020. (Photo by Cristian Mallocci/Handout via Reuters)