This book provides a foundation for students studying international law who need to supplement knowledge from their courses or obtain a quick overview to prepare for an exam. The topics covered range from the historic foundations of international law (including an overview of the subject's founders) to the laws of wars and use of force. The book contains information on wars ranging from the 100-years war to Vietnam and the one in Iraq. The book provides a comprehensive overview of state formation and obligations, including state requirements to treat all individuals (citizens, immigrants, and aliens) humanely. Students who review the state responsibility chapter will obtain an approach to writing essay questions on international law or briefs for international tribunals.