 In line with the Castañeda Doctrine of new openness in Mexico's foreign policy, established in the early first decade of the 21st century, some political parties have proposed an amendment of the Constitution in order to allow the Mexican army, air force or navy to collaborate with the UN in peacekeeping missions.As a founding member of the Organization of American States (OAS), Mexico has actively participated in the intergovernmental organization.Since the creation of the OAS, Mexico always promoted to include more principals related to international cooperation and less military aspects, its position was based on the principles of non-intervention and the pacific resolution of disputes.