U.S., May 6 -- Environmental issues are no longer confined to the domains of science or ethics. They have become matters of diplomacy, negotiation, and power. From COP21 to growing tensions over access to water and rare earths, ecological challenges are reshaping the international political landscape.

In a world marked by fragmentation and competition, the green transition represents both an urgent imperative and a strategic opportunity. Once considered peripheral, environmental diplomacy is now emerging as a key framework for understanding international relations, blending cooperation, competition, and new notions of energy sovereignty.

The rise and consolidation of a new diplomatic field Environmental diplomacy began taking shape in t...