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. What is a 'treaty' according to the Vienna Convention on the Law of Treaties (VCLT)?

Treaties are all agreements concluded between States, international organizations and non-State entities (e.g. corporations) correct incorrect

Treaties are agreements concluded between States in written form and governed by international law correct incorrect

Treaties are both the written and oral agreements between States correct incorrect

Treaties are agreements concluded between States in written form governed either by international or domestic law correct incorrect

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. Should treaties assume a particular form?

Treaties should always be designated as such and assume a particular form correct incorrect

Treaties should always assume a particular form, no matter how they are designated correct incorrect

Treaties do not have to assume a particular form or designated as such correct incorrect

Treaties have to be designated as such, no matter what form they assume correct incorrect

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. Who has the authority to conclude a treaty on the part of States?

Treaties are concluded by the competent representatives of States. Heads of States, heads of governments, ministers of foreign affairs and heads of diplomatic missions are presumed to have such authority correct incorrect

Treaties may only negotiated and concluded by the heads of State and ministers of foreign affairs correct incorrect

Treaties are negotiated and signed only by the persons that bear the necessary 'full powers' and no person is presumed to hold such authority correct incorrect

Treaties are concluded only by members of the diplomatic missions of States correct incorrect

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. How the consent to be bound of a State may be expressed?

The consent of a State to be bound is expressed only by ratification correct incorrect

The consent of a state to be bound by a treaty may be expressed by signature, ratification, acceptance, approval or accession correct incorrect

The consent of a State to be bound is expressed by signature correct incorrect

The consent of a State to be bound is expressed by whatever means they choose correct incorrect

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. Do treaties bind third States, ie non-State parties?

Treaties may create only rights for third States correct incorrect

Treaties create both obligations and rights for third States correct incorrect

Treaties do no create obligations or rights for third States without their consent correct incorrect

Treaties do not create any obligations or rights for third States, even when the latter consent. correct incorrect

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. How treaties are to be interpreted?

Treaties are to be interpreted in good faith in accordance with the ordinary meaning to be given to the terms of the treaty in their context and in the light of its object and purpose correct incorrect

Treaties are to be interpreted only in accordance with the ordinary meaning of their terms correct incorrect

Treaties are to be interpreted in accordance with the intention of the parties, as evidenced in the preparatory works of the treaty correct incorrect

Treaties are to be interpreted only in light of its object and purpose correct incorrect

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. What does the principle 'pacta sunt servanda' mean?

Parties to a treaty should be cognizant of its terms and not misinterpret them correct incorrect

Parties to a treaty should safeguard the object and purpose of the treaty correct incorrect

Parties to a treaty should adhere to its terms in good faith correct incorrect

Parties to a treaty should not violate the most important provisions of the treaty correct incorrect

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. When a reservation is considered as invalid under the law of treaties?

A reservation is invalid when the majority of the State parties objects to it correct incorrect

A reservation is invalid only when an international tribunal says so correct incorrect

A reservation is invalid only when is incompatible with a peremptory norm of international law (jus cogens) correct incorrect

A reservation is invalid when it is incompatible with the object and purpose of the treaty correct incorrect

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. What is 'material breach' of the treaty?

'Material breach' is a ground for the invalidation of a treaty correct incorrect

'Material breach' is the repudiation or a significant violation of the treaty and serves as a ground for the unilateral termination of the treaty correct incorrect

'Material breach' is an insignificant violation of a treaty correct incorrect

Material breach' is a significant violation of the treaty which can never lead to the termination of the treaty correct incorrect

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. What does the 'fundamental change of circumstances' entail for the treaty?

A fundamental change of circumstances concerns the object and purpose of the treaty and it leads to its amendment correct incorrect

A fundamental change of circumstances has no bearing on the life of treaties correct incorrect

A fundamental change of the circumstances which constituted an essential basis of the consent of the parties to be bound by the treaty and which was not foreseen by the parties, may be invoked as a ground for terminating or withdrawing from the treaty correct incorrect

A fundamental change of circumstances leads to the automatic termination of the treaty correct incorrect