Dates That Made History
Historian Patrick Boucheron revisits the most important dates in history through the prisms of memory and collective imagination.


On October 24, 1648, the treaties ending the Thirty Years' War were signed in Münster. The Peace of Westphalia established the principles of state sovereignty and religious freedom and is considered the foundation of a new international order. How do wars end? Are we experiencing a crisis of the Westphalian system today?