United Kingdom — Security Service & Mykhailo Fedorov

United Kingdom — Security Service: Khmara's background as former acting head of the SBU brings security expertise to the defence ministry. This may influence intelligence-military coordination.

Mykhailo Fedorov: Former defence minister Fedorov called for wartime elections, challenging Zelensky. His move is seen as populist but could boost his political standing, with polls suggesting he could win a runoff.

United Kingdom — Security Service: SBU, whose acting head became defence minister, involved in long-range strikes.

Mykhailo Fedorov: Popular defence minister whose dismissal sparked protests. His reforms and technological focus were widely credited with improving Ukraine's military performance. He declined an advisory role, seeking reinstatement.

United Kingdom — Security Service: SBU units struck three oil depots in Russia — Stavropol Krai, contributing to Ukraine's campaign against Russian energy infrastructure.

Mykhailo Fedorov: Fedorov was dismissed as Defence Minister, sparking protests and exposing a split in Ukraine's military leadership.

United Kingdom — Security Service: Ukraine's Security Service (SBU) has been actively involved in targeting Russian oil infrastructure facilities, demonstrating Ukraine's coordinated efforts in its long-range strike campaign.

Mykhailo Fedorov: Mykhailo Fedorov, Ukrainian Defense Minister, signed an agreement with Germany to jointly develop an air defense system.

United Kingdom — Security Service: Khmara previously headed the SBU.

Mykhailo Fedorov: Removed as defence minister due to clashes with Syrskyi.