The Treaties of Tilsit
Napoleon and Tsar Alexander I make peace on a raft in the middle of the Niemen River
Quick facts
- Location
- Niemen River, near Tilsit, East Prussia
- Date
- 7 and 9 July 1807
- Parties
- Napoleon I, Tsar Alexander I, King Frederick William III of Prussia
- Result
- Franco-Russian alliance; Prussia loses roughly half its territory
What happened
After defeating Russia at the Battle of Friedland in June 1807, Napoleon met Tsar Alexander I on a specially built raft anchored in the middle of the Niemen River, where the two emperors negotiated not just a peace but a Franco-Russian alliance. The Franco-Russian treaty was signed on 7 July 1807, followed two days later by a separate, harsher treaty with Prussia. Prussia lost roughly half its pre-war territory, including land Napoleon organized into the new Kingdom of Westphalia and the Duchy of Warsaw, while Russia, despite being the defeated party in the war, lost no territory of its own beyond the Ionian Islands and instead gained territorial concessions at Prussia's expense.
Why it matters
Tilsit marked the high point of Napoleon's power in continental Europe, turning his former enemy Russia into a nominal ally and reducing Prussia to a client state stripped of half its land. Napoleon himself, reflecting from exile on Saint Helena years later, called this period the happiest of his life, though the Russian alliance it created would collapse within five years and trigger the invasion that broke his empire.
How we know
World History Encyclopedia's account of the Tilsit negotiations documents the raft meeting, the 7 July signing date, and the territorial terms imposed on Prussia and Russia.
Sources
- World History Encyclopedia. Treaties of Tilsit · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- Brown University Library, Center for Digital Scholarship (Anne S.K. Brown Military Collection). Timeline: The Third Coalition and the Continental System (1804-1807) · Reputable sourcelibrary.brown.edu · The domain "library.brown.edu" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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