The UN Development Programme (UNDP) and UN Climate Change (UNFCCC) have been working together since 2014 to support countries in developing Nationally Determined Contributions - or NDCs - beginning with the launch of a regional NDC dialogue series that just completed its 22nd event having engaged over 2,200 participants from over 150 developing countries. This report, leveraging those relationships and history, is the most detailed review yet of momentum since the Paris Agreement and is designed to both inspire and inform the UN Climate Action Summit in New York on 23 September.