Wars have motivated and forged certain systemic changes of international order to the point of establishing rules of engagement to combat that lead the creation of modern states. In this sense, the author argues that terrorism can also act as a driving force in international architecture. In the end, terrorism is a phenomenon that, due to its volatility, asymmetry and mutable nature, does not tend to disappear, on the contrary; its main characteristic is its diversity of faces and representations. So, could terrorism serve as leverage to modernize international architecture? A question that raises more questions.