Center on Europe and Eurasia

Rumen Radev looks on as he addresses the media after casting his ballot at a polling station during Bulgaria's parliamentary elections in Sofia on April 19, 2026. (Getty Images)

Ukrainian soldiers fire at Russian positions in Donetsk Oblast in Ukraine on May 31, 2026. (Getty Images)

Bulgaria's Prime Minister Rumen Radev attends the annual NATO summit in Ankara, Turkey, on July 8, 2026. (Getty Images)

Taliban security personnel stand guard atop armored Humvees along a road in the Green Zone area in Kabul on August 12, 2026. (Getty Images)

Secretary of State Marco Rubio meets with United Kingdom Foreign Secretary Ed Miliband in Washington, DC, on August 5, 2026. (Getty Images)

A source vessel at the Baku shipyard in Baku, Azerbaijan, on February 10, 2026. (Getty Images)

Vladimir Putin attends a ceremony to mark Navy Day at the Main Admiralty in Saint Petersburg on July 26, 2026, in front of a large photo of a submarine. (Getty Images)

Britain’s Prime Minister Andy Burnham looks on on July 22, 2026, in Bath, England. (Getty Images)

Trailers with launchers for guided missiles of a German Patriot air defense system stand on a snow-covered field in southeastern Poland on April 3, 2023. (Getty Images)

Relatives of victims of the 1995 Srebrenica genocide pray at the graves of their loved ones at the Potocari Memorial Cemetery in Potocari, Bosnia and Herzegovina, on July 11, 2026. (Getty Images)

A view of the Presidential Palace, the venue for the NATO Summit on July 8, 2026, in Ankara, Turkey. (Getty Images)

US-made F-35 aircraft of the Polish Air Force on the tarmac at the 32nd Tactical Air Base in Lask, Poland, on June 12, 2026. Getty Images)