The resumption of US strikes against Iran has placed incoming UK Prime Minister Andy Burnham in a position to make a critical decision on how much to support the United States in its military campaign. Burnham, installed as leader of the governing Labour Party on Friday, July 17th, 2026, was kept informed of the strikes, which had entered their seventh consecutive night, according to sources familiar with sensitive security matters.

Outgoing Prime Minister Keir Starmer’s government was engaged in high-level discussions about the renewed US attacks on Iran even as Burnham took leadership. While Starmer initially refused to support US sorties in February, he later permitted the use of British bases, such as RAF Fairford in Gloucestershire, for defensive strikes aimed at degrading Iran’s military capabilities and countering threats to the Strait of Hormuz.

US President Donald Trump has criticized Starmer for not fully supporting the US, accusing Britain of failing to aid its closest ally. The new wave of US strikes and the risk of escalating conflict have prompted renewed debates within the British government, including on Friday, July 17th, about whether to continue approving the use of British military facilities for these operations. British officials have expressed particular concern over Trump’s threats to target Iranian civilian infrastructure, which could be viewed as violating international law.

This situation represents an early and significant test for Burnham as he assumes office, balancing the UK's alliance with the US against the complexities of the Middle East conflict.

Sources