Five men aged 23-25, all UK nationals from London, were arrested 300 metres from the perimeter of RAF Fairford in Gloucestershire in the early hours of Sunday, initially under the Explosives Act and subsequently on suspicion of preparing a terrorist act. All five have been released on bail. The airbase — one of only two in Europe available to the US military for long-range bomber operations after Spain, France, Italy and Switzerland refused similar American requests — has been central to US strikes on Iran, with B-52 and B-1 bombers regularly taking off from its two-mile runway. Two competing accounts of how the arrests unfolded are now in tension. A local farmer who encountered three suspicious vans and masked men at around 1am says she called police at 1.36am and believes her tip "foiled whatever plans" were underway. Gloucestershire constabulary, however, says it was first alerted to the vans at 12.45am — nearly an hour before the farmer's call. The rapid arrival of armed officers and police helicopters at a remote rural location in the middle of the night further suggests prior awareness. Defence secretary Wes Streeting hinted at a broader intelligence picture, while Donald Trump claimed US and UK agencies had the suspects "under view for a long time." The material found in the three vehicles is now understood not to have been viable explosives, though counter-terror police say the investigation continues. The head of UK National Counter Terrorism Policing, Laurence Taylor, confirmed the plot may have been the work of proxies acting on behalf of a foreign state. US secretary of state Marco Rubio told Fox News a foreign actor was involved, offering no evidence. Iran is the centre of speculation — it has explicitly stated it considers RAF Fairford "a legitimate target" — though its embassy "categorically rejects" any involvement. The suspected plot fits a pattern. Earlier this month, two people were arrested in north London on suspicion of assisting Iran's foreign intelligence service. In March, four Jewish community ambulances were destroyed in an arson attack with prosecutors referencing a "terrorist connection." The Guardian's Jason Burke reports that a US prosecution of Iraqi national Mohammad Baqer Saad Dawood al-Saadi has laid out in detail how Iran's Revolutionary Guards Corps commissioned and executed attacks across Europe, including in Britain, using local hires who "may not fully realise what they are involved in." The structural dynamic here is straightforward. Britain agreed to host US military operations against Iran — a decision reportedly opposed by then-foreign secretary Ed Miliband in national security meetings — and now absorbs the security externalities of that decision. Four European nations refused precisely this arrangement. RAF Fairford's role makes it a target, and the security burden falls on UK taxpayers, UK police, and UK communities living near the base. The generative value of the alliance is real but unevenly distributed; the costs are borne locally while strategic decisions are made in Washington. New prime minister Andy Burnham has signalled willingness to deviate from Trump when necessary. His foreign secretary Ed Miliband was already on record opposing the base-access decision. But as Burke notes, Iran's targeting logic is not strictly retaliatory — attacks are "selected to sow division in societies, distract policymakers, and divert resources." A policy shift would not eliminate the threat, merely alter its calculus. The investigation remains open. Whether this was a genuine near-miss disrupted by vigilant intelligence work dressed up as a civilian save, or a genuine intelligence gap papered over after the fact, the underlying question persists: Britain is absorbing asymmetric risk for a war it did not start, from a base it cannot easily close, against a threat doctrine designed to impose costs regardless of policy changes.