Those curious as to why France is at the forefront of efforts to curtail Iran's ambitions to become a nuclear power should read this wonderfully pugnacious book by Delpech, the director of strategic studies at the French Atomic Energy Commission. She sets out with authority, concision, and clarity the reasons why the international community should be concerned about Iran's nuclear program. There is no doubt about what the Iranians are up to or about the need for a strong response if they are to be diverted from their current course. To justify her subtitle, Delpech goes through each country and regional grouping with an interest in the matter, from the permanent members of the UN Security Council to implicated countries such as Pakistan and threatened countries such as Israel and Saudi Arabia, ending with the International Atomic Energy Agency, in each case explaining, without condoning, their equivocations. For a short, sharp book on the current crisis and how it should be managed, it is hard to see how this could be bettered.