This is an updated edition of the now-classic original of the same title. It has three new
substantial chapters: a prologue a chapter on new evidence on World War I and an epilogue.
The updated edition contains the now-famous typology of international crisis the original
critique of deterrence the emphasis on agency and the turn to political psychology to explain
sharp departures from rational policy-making. The new chapters update and reevaluate these
arguments and approach a critical hindsight assessment in light of post-Cold War developments.
