Leaving no one behind is the moral issue of our age, and is at the heart of an ambitious blueprint for action: the Sustainable Development Goals (SDGs). One specific goal is ‘ending poverty, in all its forms, everywhere’, but the SDGs also aim to tackle marginalisation. The SDG outcome document specifies that the goals should be met for all segments of society, with an endeavour to reach those furthest behind first.

Now the focus is on implementation, particularly at the national level, and this report not only makes the case for early action, it also quantifies its benefits. The report outlines the actions that governments can take in the first 1,000 days of the SDGs to respond to what poor people want and to deliver for the most marginalised people and groups. The evidence shows that achieving the SDGs and the ambition to leave no one behind will become far more difficult the longer governments delay.

The Overseas Development Institute report concludes that early action is critical for the achievement of the SDGs.