How do we face uncertainty in times of crisis? Debates in International Relations often struggle to disentangle the processes involved in turning the uncertainty of a crisis into decisions and actions. Drawing on the analysis of Frank H. Knight, we argue that decisions and actions taken by international actors in times of crisis are underpinned by the way that information is accessed, interpreted, and evaluated in order to claim reliable knowledge for shaping future states of the world. We illustrate our argument with the global politics of the ecological crisis and three contrasting methods used by international actors to convert the time of the crisis into decisions and actions: United Nations agencies, financial accounting standard setters and central banks.