International law cannot manufacture agreement where none exists. For this reason, international law is not well suited to the promotion of innovative solutions to international problems where the interests of States are radically divergent. ‘What international law does badly (or not at all)’ considers this in relation to climate change and to the protection of commercial interests in proprietary drugs. Also, international law cannot itself deliver international justice. While the law is an invaluable instrument for the implementation of policies that aim to make the world more just—the special preferential treatment given to developing States within the World Trade Organization, for example—it will not miraculously produce justice and fairness of its own force.