Starmer Authorises US Use of RAF Fairford for Defensive Action Against Iran
Prime Minister Sir Keir Starmer has declared that the United States will be permitted to utilise the RAF Fairford base in Gloucestershire for defensive strikes aimed at preventing ongoing Iranian missile attacks. This decision, announced in the House of Commons, establishes a narrow legal distinction, but raises significant concerns about the UK's potential slide into an unlawful conflict if British bases enable a broader US-Israeli campaign.
A Clear Legal Line with Political and Military Risks
Sir Keir was unequivocal in stating that Britain will not participate in offensive actions against Tehran, wisely avoiding an illegal attempt at "regime change from the skies." However, his authorisation for the US to use British bases for limited defensive strikes to stop Iranian missile barrages presents a legally clear yet precarious position. The prime minister emphasised that this support is for "specific and limited defensive purposes," but maintaining this boundary may prove politically and militarily challenging.
The actions of Donald Trump and Benjamin Netanyahu have been described as reckless and unlawful, mirroring Iran's own strikes on targets such as hotels, airports, and energy infrastructure across the Gulf. Under international law, the UK is entitled to act in collective self-defence when allies request support or British nationals are at risk, provided the action is restricted to halting Tehran's immediate attacks.
The Slippery Slope from Defence to Offence
Legally, targeting Iranian missile launchers that are striking British assets constitutes permissible defensive action. However, embarking on a campaign to dismantle Iran's long-term military capacity would not. Mr Trump's stated objectives include "destroying Iran's missile capabilities" and "annihilating their navy," alongside preventing Tehran from acquiring nuclear weapons, with the US president not ruling out ground troops in Iran.
While shooting down missiles or hitting launchers to prevent further attacks can be lawful, this narrowly defined defence is starkly different from the broader ambitions voiced by Washington. Sir Keir's statement to MPs revealed how easily this line could blur, noting that France and Germany are also prepared to enable US action to destroy Iran's capability to fire missiles and drones from source. Targeting "from source" suggests crippling future military power, potentially undermining claims of self-defence.
Lessons from Iraq and the Need for Parliamentary Oversight
The shadow of the Iraq war looms large, where disgust at a hardline regime and hopes for a better future were invoked, but did not provide legal grounds for conflict. Sir Keir, aware of how arguments can stretch beyond their original limits, has pledged not to repeat past mistakes. Publishing a summary of the legal basis for this decision and notifying the United Nations are critical steps for a nation advocating a rules-based international order.
Successive UK governments have consulted Parliament before using force, and the war powers convention exists to prevent mission drift. If British territory, including bases like Diego Garcia or RAF Fairford, is used for more than defensive strikes—supporting a prolonged bombing campaign aimed at degrading Iran's military—the Commons must vote. Allowing such support could risk making Britain a co-belligerent in an illegal war, emphasising the need for vigilance and accountability in this high-stakes geopolitical scenario.
