This document presents an overview of Henry Kissinger's book, "On Leadership," written when he was 99 years old. The book focuses specifically on political leadership, defining it as the ability to assess situations and long-term goals with limited information, then formulate strategies to guide a nation. Kissinger examines six prominent 20th-century political leaders—Adenauer, de Gaulle, Nixon, Sadat, Lee Kuan Yew, and Thatcher—who each exemplify a distinct leadership style and navigated their nations through crises. He introduces a "leadership function" model, emphasizing the constant interplay between past realities, future aspirations, public desires, and long-term values, asserting that leadership is more art than science, requiring intuition and vision beyond mere formulas. Ultimately, the text highlights shared characteristics among successful leaders, such as humble origins, the value of deep reading, and a willingness to confront conflict for the collective good, providing valuable insights for anyone seeking to understand and cultivate leadership.