有约必守原则
有约必守原则-
经济主权原则和有约必守原则是国际经济法的基本原则，公平互利原则和全球合作原则只是具体原则。
Principle of economic sovereignty and principle of abiding by agreements are general principles of international economic law . Nevertheless , principle of mutual benefit and principle of global collaboration are principles of specific fields in international economic law .
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作为有约必守原则的例外，情势根本变更原则无论在合同法还是条约法中都很重要，合同法与条约法中的情势根本变更原则既有联系，又有区别。
The principle of fundamental change of circumstances , as an exception of the principle pacta sunt servanda , is very important for both contract law and treaty law , and differences as well as similarities exist between them in the principle of fundamental change of circumstances .