The coalition defeated Napoleon at Leipzig, precipitating his fall from power and eventual abdication on 6 April 1814. The victors exiled Napoleon to Elba and restored the Bourbon monarchy. Napoleon escaped from Elba in 1815, gathering enough support to overthrow the monarchy of Louis XVIII, triggering a seventh, and final, coalition against him. Napoleon was decisively defeated at Waterloo, and he abdicated again on 22 June. On 15 July, he surrendered to the British at Rochefort, and was permanently exiled to remote Saint Helena. The Treaty of Paris, signed on 20 November 1815, formally ended the war.