The worldwide effort to decarbonize is no longer limited to climate summits, diplomacy, or scientific urgency. It has invaded the sector where great-power rivalries are most fiercely contested: commerce. As governments compete to establish green businesses, acquire crucial minerals, and defend domestic manufacturing, climate policy is evolving into the language of a new trade conflict. The era of green protectionism has come, with regulations disguised as environmental necessity while serving as strategic industrial shields....