X. Voidance of Treaties
540. Grounds of Voidance [576]
541. Extinction of one of the two Contracting Parties [576]
542. Impossibility of Execution [577]
543. Realisation of Purpose of Treaty other than by Fulfilment [577]
544. Extinction of such Object as was concerned in a Treaty [577]
XI. Cancellation of Treaties
545. Grounds of Cancellation [578]
546. Inconsistency with subsequent International Law [578]
547. Violation by one of the Contracting Parties [579]