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)
US President Donald Trump and Ukraine's President Volodymyr Zelensky meet in the Oval Office of the White House in Washington, DC, February 28, 2025. (Saul Loeb/ AFP via Getty Images)
US President Donald Trump and Ukrainian President Volodymyr Zelensky meet in the Oval Office at the White House on February 28, 2025, in Washington, DC. (Andrew Harnik via Getty Images)
Ukrainian soldiers practice firing a Browning heavy machine gun on February 20, 2025, in Donetsk Oblast, Ukraine. (Roman Chop/Global Images Ukraine via Getty Images)
Ukrainian President Volodymyr Zelenskyy and then US president-elect Donald Trump shake hands after their meeting at the Elysee Presidential Palace in Paris, France, on December 7, 2024. (Ukrainian Presidency / Handout/Anadolu via Getty Images)
A tank participates in a live fire exercise of Leopard 1A5 crews in Ukraine on February 5, 2025. (Dmytro Smolienko/Ukrinform/NurPhoto via Getty Images)
Ukrainian soldiers operate an American Humvee fitted with Soviet era Grad launcher in the direction of Toretsk, Ukraine, on January 23, 2025. (Wolfgang Schwan/Anadolu via Getty Images)
Recruits of the Alcatraz assault battalion prepare for medical and trench training in Donetsk Oblast on January 31, 2025. (Jose Colon/Anadolu via Getty Images)
Ukrainian soldiers work on a Soviet era Pion self propelled howitzer in the direction of Chasiv Yar, Ukraine, on January 27, 2025. (Wolfgang Schwan/Anadolu via Getty Images)