This class examines the most pressing international security problems facing the world today: nuclear crises, non-proliferation, insurgencies and civil wars, terrorism, and climate change. Alternative perspectives - from political science, history, and STS (Science, Technology, and Society) studies - are used to analyze these problems. The class includes an award-winning two-day international negotiation simulation. All undergraduates should enroll in the POLISCI 114S listing of this course. The INTLPOL 241 listing is open to students enrolled via the Stanford Center for Professional Development only. All other Stanford graduate students should enroll in the separate course, INTLPOL240, instead.