In 1802 peace was temporary. The major European nations were still feeling that their interests were under threat. The Napoleonic Wars were to be the final, deadly clash of long-term international tensions and hostilities, which came to a head as French power surged. ‘The Napoleonic Wars, 1803–1815’ explains what happened after peace in 1802, how Europe dived back into a state of war, and what part Napoleon played in the rise to war and the fall of his empire. It was Napoleon's ambitions towards Russia that eventually secured his defeat. After defeat in Russia, the Napoleonic Empire unravelled.