The United Kingdom has announced it will deploy military assets for a future defensive mission to protect shipping in the Strait of Hormuz, but it has declined to join the United States in offensive strikes against Iran. Prime Minister Keir Starmer's decision has drawn sharp criticism from President Donald Trump, who questioned Britain's military readiness and commitment to their long-standing alliance.

Two recent reports have highlighted longstanding weaknesses in British defense capabilities. Analysts say years of underfunding and shifting strategic priorities have reduced the size and readiness of the armed forces, limiting the country's ability to project power abroad. Naval forces in particular have seen significant reductions over the past three decades, leaving fewer operational warships to meet global commitments.

A parliamentary committee warned that close defense cooperation with the United States has fostered dependency and eroded Britain's credibility in Washington. Although the government has pledged to increase defense spending to 2.5 percent of gross domestic product by 2027, with ambitions to go higher, experts caution that rebuilding capability will take time.

While some in Washington view Britain's absence from offensive operations as a setback for the special relationship, analysts suggest the episode underscores the constraints facing a mid-sized power attempting to maintain global influence after years of budget pressures and military cuts.