The titan of American foreign policy was complicit in millions of deaths — and never showed remorse for his decisions.

Henry Kissinger — who as a top American foreign policy official oversaw, overlooked and at times actively perpetrated some of the most grotesque war crimes the United States and its allies have committed — died Wednesday at his home in Connecticut. He was 100 years old.

Kissinger’s death was announced by his consulting firm on Wednesday evening. No cause of death was immediately given.

Kissinger served as secretary of state and national security adviser under Presidents Richard Nixon and Gerald Ford, positions that allowed him to direct the Vietnam War and the broader Cold War with the Soviet Union, and to implement a stridently “realist” approach that prioritized U.S. interests and domestic political success over any potential atrocity that might occur.