The last major conflict between the two were the Napoleonic Wars in which coalitions of European powers, financed and usually led by the United Kingdom fought a series of wars against the First French Empire and its client states, culminating in the defeat of Napoleon at Waterloo in 1815. There were some subsequent tensions, especially after 1880, over such issues as the Suez Canal and rivalry for African colonies. Despite some brief war scares, peace always prevailed. Friendly ties between the two began with the 1904 Entente Cordiale, and the British and French were allied against Germany in both World War I and World War II; in the latter conflict, British armies helped to liberate occupied France from the Nazis. Both nations opposed the Soviet Union during the Cold War and were founding members of NATO, the Western military alliance led by the United States. During the 1960s, French President Charles de Gaulle distrusted the British for being too close to the Americans, and for years he blocked British entry into the European Economic Community, now called the European Union. De Gaulle also pulled France out of its active role in NATO because that alliance was too heavily dominated by Washington. After his death, Britain did enter the European Economic Community and France returned to NATO.