General support. The Centre for Long-Term Resilience (CLTR) is an independent think tank based in the UK with a mission to transform global resilience to extreme risks. They do this by working with governments and other institutions to improve relevant governance, processes, and decision making. They believe that extreme risks pose some of the biggest challenges of the 21st Century, and want to work with a wide range of people and organisations who share their goals. As a result, they aim to collaborate with a broad coalition of policymakers, academics, think tanks and private-sector risk experts.