Instead of an iron triangle, many agencies are now part of an issue network

Which of the following assumptions best captures the assumption underlying the domino theory?

a. A true balance of power can only be maintained if all members in the system enjoy equal benefits. b. The balance of power will be overthrown if one state's successful policies cause many other states to rally to its side. c. If states are guided by self-interest rather than by international diplomacy, they will have no incentive to cooperate with other states. d. Unless one state emerges as a "hyperpower" to impose its will on its neighbors, then a truly stable system of international relations is impossible. e. Once one state begins to act purely in its own self-interest, all other states must respond in kind, leading to an inevitable destabilization of the balance of power.

Which of the following would be sufficient to constitute a change in the structure of the international system, as defined by Waltz?

a. the emergence of a new international organization, such as the United Nations, that contains all states as members b. an increase in the number of great powers in the system from two to four c. the demise of several states in the system d. the system's four great powers forming two large alliances e. a significant increase in trade dependence among states in the system