War most often promotes the internal unity of each state involved. The state plagued by internal strife may then, instead of waiting for the accidental attack, seek the war that will bring internal peace.
Kenneth WaltzIt is not true that were the Soviet Union to disappear the remaining states could easily live in peace.
Kenneth WaltzIf we are to have peace, we must learn loyalty to a larger group. And before we can learn loyalty, the thing to which we are to be loyal must be created.
Kenneth Waltz