The seminal text on neorealist analysis! From Theory of International Politics: National politics is the realm of authority, of administration, and of law. International politics is the realm of power, of struggle, and of accommodation.
States, like people, are insecure in proportion to the extent of their freedom. If freedom is wanted, insecurity must be accepted. Organizations that establish relations of authority and control may increase security as they decrease freedom. If might does not make right, whether among people or states, then some institution or agency has intervened to lift them out of nature s realm.
Scientists of international politics are always enthusiastic to be interviewed about events in the International realm and even give their advice what to do, but never ever would be prepared to forecast events to come, claiming that an envision of the future is ability given only to prophets. But theories can be tested only if events to come can be deducted from past and the current situation, according to laws derived from the theories. Giving advice about the future is impossible if you cannot assume the way events will develop in the future, and that is exactly what all other scholars are not prepared to do.
Waltz's textbook lays the foundation of the theoretical paradigm that is dominant among international relations scholars.