“…3 The existence of such complexes creates opportunities for strategic action. 4 Depending on the characteristics of a regime complex, available change strategies for dissatisfied states can include regime shifting (the use of existing alternative institutions), competitive regime creation (creating new institutions to challenge existing ones), or attempting to secure internal change without exercising such outside options. 5 In complexes that are characterized by higher degrees of functional differentiation between institutions, that is, complexes populated with institutions within the same issue area that differ in their roles, a strategy of regime shifting is more difficult, while a strategy of regime creation is more likely.…”