Kyiv — President Volodymyr Zelensky shook up his wartime government, drawing thousands into the streets on Thursday across Ukraine to protest the ouster of his youthful defence minister — seen as an innovator of the country’s successful drone technology but who clashed with the traditional military establishment.The overhaul, which included replacing the prime minister, could become a test of Zelensky’s political authority as Ukraine’s fight against Russia’s full-scale invasion approaches four-and-a-half years.The moves threw Ukraine’s military leadership into an unwelcome crisis while its actions against Russia are starting to bear fruit and as Moscow has unleashed unrelenting aerial attacks. Two people were killed, and five others were wounded, including a child, when Russian missiles hit the capital of Kyiv overnight, Ukraine’s Emergency Service said.In making the changes, Zelensky cited friction between outgoing defence minister Mykhailo Fedorov and Gen Oleksandr Syrskyi, commander of Ukraine’s armed forces.“I’m just showing that if the sides can’t resolve an issue, I will have to resolve it,” Zelensky said at a news conference.Seen as moderniserFedorov, 35, is considered to be a vigorous moderniser whose technological expertise is credited in part with significantly improving Ukraine’s military performance in recent months against Russia’s bigger army. He is leaving the government after only six months in the post.Fedorov appeared at a news conference in a dark T-shirt and jeans and accused Syrskyi of blocking reforms needed because “the war has changed completely” due to new technology like drones.During his time in office, he secured restrictions on Russian forces’ access to the Starlink satellite communications system, allowing Ukraine to better leverage its midrange strike capabilities, giving Kyiv big battlefield advantages.Fedorov said he was willing to work with Syrskyi, “but we encountered a situation in which all the initiatives we proposed began to be blocked”.“Under this arrangement [with Syrskyi as commander], I personally do not know how the war can be won,” he said.On social media, Fedorov highlighted what he called his major achievements: redirecting funds earmarked for salaries into midrange strike capabilities, fibre-optic drones, reconnaissance systems and other technologies. He pointed to expanded drone procurement, Patriot missile defence contracts, successful ballistic missile tests and sweeping changes to military procurement.But he acknowledged he was unable to complete the defence ministry’s organisational transformation “according to Nato standards and common sense” and move all procurement to competitive tenders and build a culture of accountability.Syrskyi didn’t appear in public but, in a Facebook post, thanked Fedorov and said he hopes he will continue to serve Ukraine. “I wish him to continue to remain in the Ukrainian team,” Syrskyi said without elaborating.Zelensky said he is considering interior minister Ihor Klymenko as one of the candidates to succeed Fedorov. It’s unclear when legislators will vote on the new defence minister.Zelensky described a difficult relationship between the defence ministry and the military at multiple levels, not simply a matter of personalities, and he said both sides share responsibility for the consequences.“Together we win, and together we’re responsible for the things that cause confusion and public reaction,” Zelensky said alongside British Prime Minister Keir Starmer, who was making his final foreign visit before leaving office next week.Young protesters Syrskyi, 60, initially organised the defence of Kyiv in February 2022 and, seven months later, masterminded a successful counteroffensive in the Kharkiv region. Born in 1965, he attended the Moscow Higher Military Command School before serving in the Soviet Artillery Corps before the USSR’s collapse in 1991.The Ukrainian military has rallied under Fedorov, slowing Moscow’s front-line advance to a virtual standstill and striking refineries and other energy infrastructure deep inside Russian territory, causing widespread fuel shortages, Western officials and analysts say. Zelensky’s decision to fire him despite that record has dismayed many people.Before becoming defence minister in January, Fedorov headed Ukraine’s digital transformation policies. He won popularity by spearheading the rapid development and deployment of drone technology and introducing several successful e-government platforms.As minister, he moved to combat corruption, an issue that carries particular weight with Ukrainians who have repeatedly protested graft. Fighting corruption meant working against the interests of groups that had long profited from programmes within the ministry, he said in interviews.He was seeking to overhaul weapons procurement to make it more transparent.He also promised sweeping military reforms, saying the military had faced about 200,000 desertions and draft-dodging by some 2-million people.The mostly young protesters who took to the streets of Kyiv and other cities to support Fedorov made crude remarks about the current military commander, chanting, “Syrskyi go away!” and “A European army for a European country!”Kyiv resident Bohdan Huryak said he was “deeply outraged” by Fedorov’s exit.“I’m not deeply invested in the internal political debates, but this is a person who shows results on the battlefield, we see results, and we feel the fighting spirit and confidence in victory rising,” Huryak said. “And then, six months later, he is removed from office? Come on.”Russian military correspondents and pro-Kremlin bloggers relished the controversy. Pro-Kremlin political analyst Sergei Markov described Fedorov’s comments as a “rebellion” against Zelensky.The deputy commander of Ukraine’s air force, Col Pavlo Yelizarov, quit over Fedorov’s dismissal. It will weaken Ukraine’s air defences and lead to more deaths from Russian missile and drone attacks, he said in his resignation letter posted on social media.“I believe that the dismissal of Mykhailo Fedorov is a great evil for the country’s defence capability,” he wrote on Facebook.New prime ministerParliament overwhelmingly approved Serhii Koretskyi, the head of state energy company Naftogaz, as the country’s new prime minister.In nominating Koretskyi, Zelensky cited his record in the energy sector and argued he was best prepared to guide Ukraine through another winter, when Russian attacks on the power grid intensify.Zelensky swiftly reversed course in July 2025 when large street protests broke out over a new law that would have curbed the independence of the country’s anticorruption watchdogs. The outcry threatened his leadership for the first time since Russia’s invasion.