Why this matters: Seizing shadow fleet vessels could disrupt Russia’s oil income and strengthen enforcement of international sanctions. Date: 25 March 2026 Tags: Defence, Politics, Russia, Sanctions Summary: UK forces prepared to board and detain sanctioned Russian oil vessels. Defence Secretary John Healey said operations are now “ready to act”. Russia accused of using “shadow fleet” ships to evade oil sanctions. Legal basis for seizures identified under 2018 sanctions legis