question: What must be true of coercion through the threat or use of force of a party to treaty for it to invalidate the state 's consent to a treaty ?
answer: used to obtain the consent of that state to a treaty
turker_answer: To invalidate the state 's consent to a treaty , coercion through the threat or use of force of a party to treaty for it must be used to obtain the consent of that state to a treaty .
rule-based: Used to obtain the consent of that state to a treaty must be true of coercion through the threat or use of force of a party to treaty for it to invalidate the state 's consent to a treaty .