Britain stands firmly behind Volodymyr Zelenskyy, the defence secretary has stated, following remarks from Donald Trump urging that the Ukrainian president be replaced and the announcement of a controversial US agreement to purchase Russian diesel.

Wes Streeting emphasized that the people of Ukraine alone should determine their country's leadership, suggesting that Trump was navigating domestic political pressures regarding fuel costs ahead of upcoming US midterm elections.

Appearing on the BBC programme Sunday with Laura Kuenssberg, Streeting was asked if Britain backed Zelenskyy remaining in office. He responded that the aggressor was clearly Vladimir Putin, who chose to start and could choose to end the war. Streeting affirmed that the UK stands with Ukraine and with President Zelenskyy.

Trump claimed on Saturday that Ukraine required a new leader capable of negotiating a peace agreement, criticizing Zelenskyy for not ending the conflict and blaming Ukrainian attacks on Russian oil refineries for surging American diesel prices.

Zelenskyy labeled the diesel agreement a concession to Putin, warning that boosted Russian energy revenues would directly fund the ongoing war. Trump has faced mounting political heat over the economic fallout from the conflict with Iran, which has driven up international energy expenses shortly before voters head to the polls for the midterms.

The rising cost of fuel has impacted consumers and worsened inflation, hurting Trump's popularity. This financial squeeze is felt acutely in farming states such as Iowa, Kansas, Texas, and Ohio, where agriculture relies heavily on diesel.

Speaking to Sky News, Streeting pointed to the political realities of upcoming midterms and cost-of-living concerns, noting that leaders everywhere feel pressure to ease energy prices while adding that the UK would prefer a more robust sanctions approach.

Streeting worked to prevent a major public disagreement with Washington, stressing that London's main objective remained preserving western unity. He noted the importance of not overstating the impact of the Russian oil purchase while acknowledging ongoing US backing for Ukraine.

During a phone conversation with Zelenskyy on Saturday, Prime Minister Andy Burnham reaffirmed his total solidarity with Ukraine. Downing Street confirmed the two leaders agreed to an in-person meeting soon, with Burnham committing to tighter sanctions against Russia alongside calls for an energy ceasefire.

Gen Sir Richard Barrons, co-author of Britain's strategic defence review, cautioned that the US deal for Russian diesel would result in additional Ukrainian casualties by supplying Moscow with funds for its war effort. He stated that funds from Russian energy exports finance the weaponry targeted at Ukraine, noting that security priorities were being compromised for electoral gain.

In separate remarks, Streeting indicated that Britain is not actively contemplating offensive military action against the Houthis following an assault on King Khalid International Airport in Riyadh that left 12 dead and over 300 injured.

Streeting mentioned ongoing discussions with Saudi Arabia regarding expanded military assistance, though he stopped short of ruling out future direct involvement. Describing the overnight strike as an alarming escalation, he noted that the UK already contributes air-to-air refuelling and ground-based air defence capabilities.

Concluding his remarks on the Middle East, Streeting said he had consulted his Saudi counterpart multiple times recently regarding additional British support, concluding that further measures are clearly necessary in light of recent events.