Final answer:
The view that international institutions reflect power and don't independently affect state behavior aligns with the realism theory in international relations.
Step-by-step explanation:
The argument that international institutions merely reflect power and do not have an independent effect upon the behavior of states is most consistent with realism. Realism posits that states are primarily concerned with their own security and that the most powerful states exert the greatest influence over the international system. This realist perspective contrasts with other theories like liberalism and constructivism, which acknowledge that international institutions may shape state behaviors by promoting collective security, creating norms, and establishing rules that states are pressured to comply with.