You have to watch carefully, wearing ear protectors, to figure out that this film is about a bloody war waged by "young american" drug lords against the old hands in London. There is an American DEA agent to "advise" the London bobbies, but he isn't young. He does have an agenda of his own, but it emerges only obscurely, as does everything else, except the noise. Even the dialog is all but incomprehensible. It's a strange way to tell a story. The editing is of a piece with the rest of the treatment. Confusing. There are pluses, though. The camera work is innovative and often beautiful images emerge from the general murk. The cast, apart from Keitel, were largely unknown to me, but they were mostly first rate at limning the many characters in the London underworld. Many were also uncredited, strange in an era when the post credits usually scroll for at least 7 minutes.