Five men, three suspicious vans, a US-operated air base and an investigation that now reaches directly into the security fallout from the Iran war. What began with a late-night telephone call from a member of the public has become one of Britain's most closely watched counter-terrorism investigations. By the Editorial Team of TLF There is still much that British authorities have not disclosed about what happened outside RAF Fairford in Gloucestershire in the early hours of Sunday, 27 September. But by Sunday night, the picture had become significantly clearer — and considerably more serious. Five men remain in custody. Counter Terrorism Policing is leading the investigation. Army bomb-disposal specialists have been examining three vehicles. And investigators are looking at whether the suspected plot could have an Iranian connection, although no such link has been established publicly. Here are five questions — and what we actually know so far. 1. What Exactly Happened Near RAF...