Ronald Reagan
In foreign policy, Reagan ended détente (the policy of being friendly to the Soviet Union) by ordering the largest peacetime military buildup in American history. The U.S. government had to borrow a lot of money to pay for it. He had many new weapons built. Soon, the U.S. began to research a missile defense system that would destroy missiles. It was to prevent a nuclear war from happening. The program was called Strategic Defense Initiative. It was nicknamed "Star Wars".