For example, the European Union Water Framework Directive21 imposes legally binding requirements with respect to adaptation-relevant investments on private sector actors engaged in water-related development efforts. As noted above, the Paris Agreement promises an enhanced role for utilization of market mechanisms for payment of environmental services, and the next generation of market tools for sustainable development could make adaptation deliverables a focus (Persson, 2011). For example, investments in infrastructure and early warning systems must precede the delivery of some adaptation measures such as improved crop distribution, enhanced delivery of medical services during a heat wave and rapid response to extreme weather events.