In "Kissinger: A Biography," Walter Isaacson explores Henry Kissinger's complex role in shaping U.S. foreign policy during pivotal moments in the 20th century. Kissinger's approach combined realism with pragmatism, often placing national interest above ideological concerns. His strategies, particularly during the Cold War, led to significant diplomatic breakthroughs, though they also sparked controversy and debate over moral implications.
Isaacson emphasizes how Kissinger's decisions, such as rapprochement with China and intervention in Vietnam, were rooted in a pragmatic understanding of international relations. Critics argue that his actions sometimes disregarded humanitarian considerations, raising questions about legality and ethics based on international law.