Britain has escalated economic pressure on Moscow by unveiling its most extensive sanctions package since the Russia–Ukraine war began in 2022, focusing sharply on cutting off key oil revenues.

The newly announced measures include around 300 restrictions targeting Russia’s energy earnings, particularly oil exports, along with suppliers linked to military equipment supporting the war effort. Officials confirmed that more than 3,000 individuals, entities and vessels have already been sanctioned under the UK’s broader regime.

The announcement coincided with UK Foreign Secretary Yvette Cooper’s visit to Kyiv, where discussions also centered on strengthening Ukraine’s capabilities through additional support.

A major emphasis of the sanctions falls on pipeline networks, which are responsible for transporting over 80 percent of Russia’s oil exports. By tightening these channels, the UK aims to complicate the global marketing and distribution of sanctioned crude.

According to the British government, international sanctions have already deprived Moscow of more than $450 billion in revenue—an amount described as equivalent to funding two additional years of Russia’s military operations in Ukraine. The latest move signals continued efforts to sustain economic pressure as the conflict persists.