The Islamic Republic has renewed its threat of revenge against Britain for letting Washington use RAF Fairford to launch a B1 bomber raid on Iran.Foreign Minister Abbas Araghchi warned on Friday that Tehran would hold accountable any country found assisting Washington in an attack.'Any participation, cooperation or assistance in committing aggression against Iran will create international responsibility for the relevant parties,' Araghchi said at a meeting in Kyrgyzstan, adding that Iran 'reserves its right to take all necessary measures within the framework of self-defence'.It came after a previous statement from the Islamic Revolutionary Guard Corps (IRGC), who condemned the 'British monarchy regime' for coming to America's aid and warned that 'any base used to invade Iranian territory is our legitimate target'.Analysts have in the past questioned whether Tehran has the military technology to threaten Western Europe.But in March, Israel warned that the regime has missiles large enough to destroy a building in major capital cities.'The IDF revealed that the Iranian regime has intentions to develop missiles with a range of 4,000km (2,485 miles), which pose a danger to dozens of countries in Europe, Asia and Africa. The Iranian regime denied this,' the IDF said in a statement.'We have been saying it: The Iranian terrorist regime poses a global threat. Now, with missiles that can reach London, Paris or Berlin.'