In this pool photograph distributed by the Russian state agency Sputnik, Vladimir Putin enters a hall to meet with graduates of higher military educational institutions at the Kremlin on June 23, 2025. (Alexander Kazakov via Getty Images)
A formation of Dongfeng-41 nuclear missiles takes part in a military parade celebrating the seventieth anniversary of the founding of the People’s Republic of China in Beijing on October 1, 2019. (Xia Yifang via Getty Images)
Senior lecturer in the Department of Security Studies and Criminology at Macquarie University, Council of the Australian Strategic Policy Institute
President Donald Trump and Ukrainian President Volodymyr Zelenskyy pose for a picture with European leaders following a meeting at the White House on August 18, 2025. (Win McNamee via Getty Images)
A US Marine Corps VXE30 Stalker unmanned aerial system is staged during a maritime domain awareness training exercise in southern Finland on July 31, 2025. (DVIDS)
A US Air Force B-1B long-range bomber and F-16 fighter jet fly over the Canadian Arctic during North American Aerospace Defense Command’s Arctic air defense exercise, "Amalgam Dart 21-2" on March 24, 2021. (US Air Force)
The Ohio-class ballistic missile submarine USS Louisiana transits Puget Sound following a 41-month engineered refueling overhaul at Puget Sound Naval Shipyard and Intermediate Maintenance Facility on February 9, 2023. (US Navy photo by Brian G. Reynolds)
An F-22 Raptor assigned to the 94th Fighter Squadron, Joint Base Langley-Eustis, Virginia, takes off for a Red Flag 23-1 mission at Nellis Air Force Base in Nevada on January 24, 2023. (US Air Force Photo by William R. Lewis)
A Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) poster displaying North Korean nuclear tests on February 12, 2013, at the CTBTO headquarters in Vienna, Austria. (Dieter Nagl/AFP via Getty Images)