Britain was both France's and America's mutual foe. French wars with Britain lasted from 1715 to 1815, when Napoleon signed a peace agreement that ended the war for good. The two countries remain diplomatic allies today. France has had more than its share of enemies over the years, including Germany, Spain, Italy, Japan, and Russia. Today these enemies are the countries against which France fights for territory or influence. During the French Revolution, France became an enemy of England, Germany, and their European colonies. In 1793, France went further by declaring war on Great Britain and its allies (including the United States). The British defeated France in 1814, ending two centuries of conflict between the two nations. In World War I, France joined England, Belgium, and Serbia against Germany. In 1940, under German occupation, France became involved in the war against Germany. More recently, France has taken part in operations in Mali, the Central African Republic, and the Ivory Coast. Germany was France's greatest enemy during the Cold War. However, after the fall of the Berlin Wall in 1989, Germany opened itself up to foreign trade and visitors.