He was the author of Power Politics (1946; revised and expanded edition 1978), as well as the seminal essay "Why is there no International Theory?" (first published in the journal International Relations in 1960 and republished in the edited collection Diplomatic Investigations in 1966).
Ia merupakan penulis Power Politics (1946; direvisi dan diperluas tahun 1978) dan esai "Why is there no International Theory?" (pertama terbit di jurnal International Relations tahun 1960 dan diterbitkan lagi di Diplomatic Investigations tahun 1966).