After Eisenhower came to power, he began to deploy nuclear weapons abroad on a large scale with the strategy of "massive retaliation". Unlike the cases with Germany and France, negotiations between the U.S. and Italy on atomic stockpile went smoothly, and the first nuclear components were stored in 1956. However, the storage did not dampen Italy's enthusiasm for nuclear weapons. On the one hand, it actively promoted cooperation with Germany and France in the research and development of nuclear weapons. On the other hand, it urged the U.S. to deploy the IRMB. Italy's favorable domestic public opinion also provided conditions for the U.S. and Italy to finally reach a missile deployment agreement.