The second French intervention in Mexico , also known as the Maximilian Affair, Mexican Adventure, the War of the French Intervention, the Franco-Mexican War or the Second Franco-Mexican War, was an invasion of Mexico in late 1861 by the Second French Empire, supported in the beginning by the United Kingdom and Spain. It followed President Benito Juárez's suspension of interest payments to foreign countries on 17 July 1861, which angered these three major creditors of Mexico.