Gunners from the Armed Forces of Ukraine fire at Russian position with a 155 mm self-propelled howitzer 2C22 in the Kharkiv region on April 21, 2024. (Anatolii Stepanov/AFP via Getty Images)
Chinese sailors stand next to a submarine rescue ship Hongzehu from the PLA Navy as it is docked on April 23, 2024, in Qingdao, China.(Kevin Frayer via Getty Images)
Researchers with the Naval Postgraduate School and NASA employ a REMUS 100 UUV to create a detailed map of a shallow environment off the coast of Florida on September 13, 2013. (DVIDS
Gunners from the Armed Forces of Ukraine fire at Russian position with a 155 mm self-propelled howitzer 2C22 in the Kharkiv region on April 21, 2024. (Anatolii Stepanov/AFP via Getty Images)
Chinese sailors stand next to a submarine rescue ship Hongzehu from the PLA Navy as it is docked on April 23, 2024, in Qingdao, China.(Kevin Frayer via Getty Images)
The Skydio X10D drone flies during a counter-uncrewed aerial systems training exercise at Grafenwoehr Training Area in Bavaria, Germany, on February 13, 2025. (US Army photo)
Rear view of a North Korean girl carrying water on a road on May 16, 2009, in Chongsan-ri Cooperative Farm, North Korea. (Eric Lafforgue/Corbis via Getty Images)
South Korean President Yoon Suk-yeol speaks during the United Nations General Assembly on September 20, 2023, in New York City. (Photo by Michael M. Santiago/Getty Images)
South Korean activists wave banners reading "abolish concentration camps!" during a rally for North Korea's human rights in Seoul on December 9, 2011. (Photo by Jung Yeon-je/AFP via Getty Images)
US and Korean soldiers prepare for take off during an air assault mission as part of exercise Freedom Shield 24 on March 13, 2024, at Wonju Air Base in South Korea. (US Army Photo by KPfc. Lee Hyun Bin)
People watch a television screen showing a news broadcast with file footage of North Korea's artillery firing at a railway station on January 6, 2024, in Seoul, South Korea. (Chung Sung-Jun via Getty Images)
Russia's President Vladimir Putin shakes hands with North Korea's leader Kim Jong Un during their meeting in Amur Oblast, Russia, on September 13, 2023. (Vladimir Smirnov/POOL/AFP via Getty Images)
The flags of Russia, China, and North Korea on a viewing tower on the border between the three countries in Hunchun, China, on June 25, 2015. (Greg Baker/AFP via Getty Images)