Final answer:
The Secretaries of State who have served since 1950 and the Presidents they served under are:
- John Foster Dulles served under President Dwight D. Eisenhower.
- Henry Kissinger served under Presidents Richard Nixon and Gerald Ford.
- Colin Powell served under President George W. Bush.
- Hillary Clinton served under President Barack Obama.
- Mike Pompeo served under President Donald Trump.
Step-by-step explanation:
John Foster Dulles was Secretary of State under President Dwight D. Eisenhower in the 1950s, known for his staunch anti-communist stance and advocacy for containment policies during the Cold War. Henry Kissinger held the position during the Nixon and Ford administrations, shaping foreign policy through realpolitik and orchestrating significant diplomatic breakthroughs, notably in China. Colin Powell, a key figure during the George W. Bush administration, notably advocated for the Iraq War before the United Nations.
Hillary Clinton, under President Barack Obama, championed "smart power" diplomacy and played a crucial role in global affairs, focusing on human rights and women's issues. Mike Pompeo, under President Donald Trump, pursued an assertive foreign policy, emphasizing national interests and confronting adversaries like China and Iran.