There is a dangerous impasse. Iran has rejected the deal whereby they would export their uranium to a third country to allay fears it would be enriched for weapon use. The US has said this is an ‘inadequate response’ which means they will want to talk sanctions, a step supported by Europe, but not by Russia or China. And after sanctions, there is a real threat of war. That is why there is such an urgent need for serious intercessors. David Petraeus, a senior US military figure, has let it be known that there are contingency plans if negotiations fail. And Israel has always made it clear that it is not willing to tolerate a nuclear armed Iran.