And yet, far from holding the Iranians to account for their deception, we now have the bizarre situation where we have world leaders from Washington to Tehran – even including Syrian dictator Bashar al-Assad – celebrating the conclusion of a deal which leaves us none the wiser about Iran’s true nuclear intentions. Moreover, the deal set out in Vienna yesterday allows Iran to retain vital capabilities that can be used for making nuclear weapons, such as developing more sophisticated methods of enriching uranium to weapons grade, as well as continuing development work on its ballistic missile programme.