A drug created by the former KGB to keep its agents sober so that they could drink opponents under the table before stealing their secrets is being sold on the internet to Hollywood stars as a defence against hangovers. The drug, known as RU-21, is made in Russia and sold as a natural remedy on the internet. Hollywood actors are said to be fond of the fix, called after the American legal drinking age, which enables them to make the most of LA's party circuit without red eyes or pounding headaches detracting from their delivering the goods on the film...