The combination of classical and contemporaneous authors of political geography allow us to analiser an international scale. International Conventions on Environment were created to regulate the different interests at stake. They offer new forms of interchange, commerce and cooperation among countries. However the asymmetric relationship among the parties exposes the need to discuss sovereignty, sustainability and environmental security, central concepts that maintain the international environmental order, the set of multilateral agreements on environment. For this reason, it is instrumental to examine the theoretical matrix of the above mentioned concepts in combination with the international conventions elaborated in Summits, such as the ones held in Stockholm, Rio de Janeiro and Johannesburg, to reinforce the dialogue in the resolution of international problems.