Principle of fundamental change of circumstances comes from international custom law. Though codified by Vienna Pact of Treaty law, it is strictly restricted in application.

因情势根本改变而终止条约的原则，是国际习惯法的规则，虽经《维也纳条约法公约》将其法典化，但对其适用条件的规定却极为严格。

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Principle of fundamental change of circumstances comes from international custom law. Though codified by Vienna Pact of Treaty law, it is strictly restricted in application.

因情势根本改变而终止条约的原则，是国际习惯法的规则，虽经《维也纳条约法公约》将其法典化，但对其适用条件的规定却极为严格。

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