Henry Kissinger (1923–2023) was a German-born American diplomat, political scientist, and author widely regarded as one of the most influential and controversial figures in modern U.S. foreign policy. Born in Fürth, Germany, to a Jewish family that fled Nazi persecution in the 1930s, he rose to prominence as a Harvard professor before serving as National Security Advisor and later Secretary of State under Presidents Nixon and Ford. He is remembered for works including Diplomacy, World Order, and On China, books that draw on his decades of firsthand experience to examine the balance of power, national interest, and the shifting nature of global order. A leading architect of Cold War-era policies including détente with the Soviet Union and the opening of relations with China, he was awarded the Nobel Peace Prize in 1973 for negotiating a ceasefire in the Vietnam War, an award that remained the subject of significant controversy given his role in the conflict. Deeply associated with the doctrine of realpolitik, his legacy remains sharply contested, with admirers crediting him for reshaping 20th-century diplomacy and critics holding him responsible for the human toll of policies pursued in Vietnam, Cambodia, Chile, and elsewhere. Known for his dense, historically grounded analysis of power and diplomacy, Kissinger's writing continues to be widely read and debated in the study of international relations and foreign policy.