Book excerpt: While both the ?environmental? and ?international? dimensions of law school inquiry continue to flourish, a distinct offering in ?international environmental law? is becoming prevalent. This coursebook begins with a relatively detailed exploration of the key doctrines, principles, and rules of ?international law,? without which it is impossible to understand or apply ?international environmental law.' It summarizes the applicability of state responsibility to environmental wrongs and presents a series of hypothetical problems bearing fact patterns that mirror the ?real world.' Coursebook presents a simulated negotiation of a fictional draft protocol to the UN Framework Convention on Climate Change.