But there is no escaping the fact that the Security Council has endured, though remaining inflexible. Besides, in terms of international law as it stands, it is still the only international body empowered to authorise military action. Seen through the prism of the ‘realpolitik’ that Sinha narrates (as distinct from moral, ideal, or legal approaches), the work of the Council so far has depended on the equations among the Permanent Five (or the P-5, as known in UN jargon), their core interests, especially if a conflict involves them. The book has many case studies, of successes in the early years, the virtual standstill because of disagreement between the US and Soviet Union through much of its history from fifties to the nineties, the action during the short period of détente after the break up of Soviet Union, and the controversial decisions taken in recent years as in the case of Libya. Conflicts where the UNSC was simply unable to act are as important or even more important as wars where it did play a role. The book lists all of them: Vietnam, Afghanistan, Israel-Arab neighbours, Iraq, Syria, Yemen and others. The reasons for such ‘inaction’ is obvious, the threat of veto, when the direct interests of a superpower are involved. A major strength of the book is this imaginatively done collation.