Deutsche Bank AG and others v Unitech Global Ltd and another [2013] EWHC 2793 (Comm), [2013] All ER (D) 190 (Sep)
It was settled law that the English law of conflicts excused performance of an obligation where performance would be illegal by the law of the country where the obligation was to be performed, but did not excuse performance where, although performance of the obligation was not illegal in the country where performance was to take place, steps necessary to enable a party to perform its obligation would be illegal in the country where such steps would be taken.