UK police 'investigate Iran link' to alleged bomb threat against base hosting U.S. Air Force

* UK police investigate Iran link to RAF Fairford bomb plot. * Five men arrested near U.S. air base used for strikes. * Tensions rise as U.S.-Iran nuclear talks stall. British police arrested five men near RAF Fairford on Sunday after thwarting an alleged bomb plot. Investigators suspect Iranian state involvement, citing the base's role in U.S. strikes on Iran. Iran had previously warned it would target such facilities. U.K. Defence Secretary Wes Streeting declined to speculate. Meanwhile, U.S.-Iran talks over reopening the Strait of Hormuz ended in stalemate, though further negotiations are expected this week.