At common law, when a frustrating event occurs, the contract is terminated at the date of the frustrating event, irrespective of the wishes of the parties. Consequently, rights which accrued before the frustrating event are enforceable, but no liability arises for obligations that would otherwise have accrued after the frustrating event took place. The operation of the rules at common law is perfectly illustrated by looking again at the 'Coronation Cases' Krell v Henry and Chandler v Webster.