With the end of the Cold War-the principal international political framework that shaped the international system since the end of WWII-an increasing number of global tensions have arisen which have brought to the fore questions about the ability of existing international law to provide a guiding framework for state behavior. Debates over the limits of state sovereignty, the appropriateness of humanitarian intervention, the justness of pre-emptive war, the definition of self-defense, the legality of replacing a government in the interests of your ideals, and how to deal with terrorism have dominated discussions around the world. Moreover, these discussions have caused stark disagreement among states, even traditional allies. Some of these issues, particularly those surrounding the concept of "just war" have become so hotly debated that they have even moved from the traditional realm of international law (academia and government) into the mainstream media for debate.
Dana Z. Falstrom,
Can International Law Survive the 21st Century - Yes: With Patience, Persistence, and a Peek at the Past,
San Diego Int'l L.J.
Available at: https://digital.sandiego.edu/ilj/vol8/iss2/3