The postwar international order is breaking down – and with it, the international aid system. In particular, important donor countries, including the US and UK, have reduced the amount of development support they provide. This collection of essays brings together leading politicians – past and present – and NGO leaders to answer the question we face: what is the future of international development? The contributors explore both how we can maximise the impact of aid investment in the short term and how we might be able to rebuild political support for international development in the long term.