 Of the 20 countries most vulnerable to climate change, the majority are at war. This means people are facing a double threat. This double threat of climate change and war pushes people out of their homes, breaks food and supply chains, amplifies diseases and weakens healthcare services. By 2050, the need for humanitarian aid is expected to double if urgent steps are not taken. We cannot let this happen. Climate funding and action must reach people in conflict zones. Climate change affects us all. But those living with this double threat can't be left to face it alone.