Center on Europe and Eurasia

A Ukrainian tank fires during practice on the frontline of the Russia-Ukraine War in Donetsk, Ukraine, on March 29, 2023. (Muhammed Enes Yildirim/Anadolu Agency via Getty Images)

Ukrainian soldier is seen in a trench1 km away from Russian positions near Soledar. (Ashley Chan/SOPA Images/LightRocket via Getty Images)

Russian Navy's diesel-electric Kilo class submarine Rostov-on-Don sails through the Bosphorus Strait on February 13, 2022. (Photo by Ozan Kose/AFP via Getty Images)

US Army National Guard Soldiers with Battery C conduct pre-mobilization training exercise America’s Shield on May 15, 2022, at McEntire Joint National Guard Base, South Carolina. (Tim Andrews via DVIDS)

A view from Nakhimov Square as daily life continues in Sevastopol, Crimea, on March 19, 2023. (Vladimir Aleksandrov/Anadolu Agency via Getty Images)

US Secretary of State Antony Blinken welcomes Turkmenistan Foreign Minister Rashid Meredov in the Treaty Room at the State Department in Washington, DC, on April 24, 2023. (Oliver Contreras/POOL/AFP via Getty Images)

Trident Juncture 18 takes place in Norway and the surrounding areas of the North Atlantic and the Baltic Sea, including Iceland and the airspace of Finland and Sweden, on November 7, 2018. (NATO via Flickr)

People visit the Huawei booth during China International Financial Exhibition at Shougang Park on April 26, 2023, in Beijing, China. (Kuang Da/JIEMIAN NEWS/VCG via Getty Images)

Servicemen belonging to the Ukrainian storm brigade take part in military exercises outside Kyiv on April 20, 2023. (Sergei Supinsky/AFP via Getty Images)

NATO Secretary General Jens Stoltenberg and Ukrainian President Volodymyr Zelensky shake hands during a joint a press-conference following their meeting in Kyiv, Ukraine, on April 20, 2023. (STR/NurPhoto via Getty Images)

Ukrainian soldiers fire targets on the front line in the direction of the city of Ugledar, Donetsk, Ukraine as Russia-Ukraine war continues on April 18, 2023. (Muhammed Enes Yildirim/Anadolu Agency via Getty Images)

A Taliban fighter stands guard as Muslim devotees offer Eid al-Fitr prayers outside a mosque in a street in Kabul on May 1, 2022. (Wakil Kohsar/AFP via Getty Images)