Final answer:
Ronald Reagan used the term 'Security Shield' in the context of international affairs and referred to his presidency as the 'golden years'.
Step-by-step explanation:
The person who used the term Security Shield about international affairs as well as referring to the golden years in one of his addresses is Ronald Reagan. President Ronald Reagan's administration was marked by efforts to revive the economy and restore American stature in the world. He adopted a stance of 'peace through strength' and sought to roll back the influence of Communism globally through the Reagan Doctrine. Additionally, Reagan looked to end Vietnam Syndrome, the reluctance to engage military force in foreign countries. His leadership style emphasized providing aid to allies instead of deploying U.S. forces directly, focusing on finding partners who were against Communist forces.
The correct answer is Ronald Reagan. During his presidency, Ronald Reagan sought to achieve "peace through strength" and had a significant focus on international affairs. He believed in rolling back the influence of Communism and pursued a strategy known as the Reagan Doctrine, which involved providing aid to anti-Communist groups worldwide. Additionally, Reagan negotiated with Soviet leader Mikhail Gorbachev to eliminate intermediate-range nuclear missiles and declared war on international terrorism.