Nonetheless, the case studies and OECD workshop revealed three key challenges faced by countries as they have started to implement their strategies and plans: overcoming climate information shortcomings and associated capacity constraints, securing adequate financing, and measuring the success of adaptation interventions. Action to address these constraints will be vital to ensuring that progress in planning translates into improvements in outcomes. Le present document propose un panorama de ces activites dans les differents pays de l’OCDE et met en exergue un certain nombre d’enseignements nouveaux qui se degagent de leur experience.