When "force majeure" has not been provided for in the contract (or the relevant event does not fall within the scope of the "force majeure" clause), and a supervening event prevents performance, it will be a breach of contract. The law of frustration will be the sole remaining course available to the party in default to end the contract. If the failure to perform the contract deprives the innocent party of substantially the whole benefit of the contract it will be a repudiatory breach, entitling the innocent party to terminate the contract and claim damages for that repudiatory breach.