For oil, the move is a reminder that the Iran conflict now reaches allied military infrastructure in Europe. That keeps geopolitical risk elevated in crude pricing even with no direct supply disruption. Relocating the bombers to the continental US doesn't reduce Washington's strike capacity, so traders are unlikely to read it as de-escalation. Any firmer evidence of direct Iranian state involvement in a plot on British soil could raise the risk premium further. It could also prompt questions about Western retaliation and the security of energy shipping routes. The muted, uncertain UK assessment may limit the immediate reaction, but it leaves a headline risk hanging over the oil complex.---A suspected Iran-linked plot against a British air base has pushed Washington to fly its Iran bomber missions from home, showing how far the conflict's reach now extends.Summary:The US has withdrawn all B-1 bombers from RAF Fairford, northwest of London, citing security concerns over suspected plots against the base.About a dozen B-1s had been stationed there, and Fairford had served as a hub for US bomber strikes on Iran.The Pentagon said the aircraft have returned to home stations in the US and remain ready for global strike missions. Britain's Ministry of Defence declined to comment.Six suspects were arrested over a foiled attack on the base and later released on bail. UK Prime Minister Andy Burnham cited strong indications of Iranian involvement.A senior US official said a branch of Iran's Revolutionary Guard recruited UK nationals for a multi-step plot that included a local diversion.Some UK officials question how sophisticated the planned attack was, and the British investigation is ongoing.The United States has withdrawn all of its B-1 bombers from RAF Fairford, the British air base northwest of London, because of security concerns linked to suspected plots against the facility. The Wall Street Journal (gated) reported the move on Sunday, citing American officials.The move marks a notable shift for Washington, which has used the base as a hub for launching bomber strikes on Iran. Around a dozen B-1s had been stationed at Fairford before their recent departure.In a statement, the Pentagon said operational security had prevented it from confirming the aircraft movements as they happened. It acknowledged that every US bomber deployed to Fairford had now returned to its home station in the United States. The department added that the aircraft remained ready to carry out global strike missions from the continental US. Britain's Ministry of Defence declined to comment.The withdrawal follows the arrest of six people in connection with what US and British officials described as an attack on the base that was foiled the previous Sunday. UK Prime Minister Andy Burnham said there were strong indications that Iran had played a role. The case has remained murky, with British authorities releasing the suspects on bail while their investigation continues.According to the Journal, US officials were aware of an Iran-linked plan to attack the bombers and kill personnel at Fairford. A senior US official said a branch of Iran's Islamic Revolutionary Guard Corps had recruited UK nationals to carry out the scheme. The plan involved several steps, including a diversion in the surrounding neighbourhood.British authorities, however, are still trying to establish exactly what happened. Some UK officials have questioned how sophisticated the planned attack really was. That gap between the confident US account and the more cautious British view leaves key questions open, including the extent of direct Iranian involvement and how advanced the plot had become.The practical upshot is that any further US bomber operations against Iran look set to be flown from American soil rather than a forward base in Europe. The Pentagon insists its global strike capability remains in place. More broadly, the episode suggests the reach of the Iran conflict now extends to allied military infrastructure in Europe. Defence planners, and energy markets, are likely to watch that closely as the British investigation unfolds. This article was written by Eamonn Sheridan at investinglive.com.