This second edition of this textbook places in context key world events since 1945. While not neglecting the significant developments of the last 50 years, this book has a broad historical and conceptual range. It provides students with a historical analysis of the origins, development and early networks of IR, and an exposition of the diverse ways in which modern "international society" has been defined and interpreted. Tackling a range on international concerns, Geoffrey Stern explores and clarifies such concepts as sovereignty, the balance of power, national interest and interdependence, illustrating his text with reference to both historical and contemporary world events.