As @gizmo says, he's a weird case. He's one of the best prose stylists in English, his use of the language is incredible. But then at the same time he wrote his

As @gizmo says, he's a weird case. He's one of the best prose stylists in English, his use of the language is incredible. But then at the same time he wrote his first 9 novels in Russian, and translated his own English works back into Russian, and into French. I'd classify a large chunk of his work as English literature, but I can't comment on how he's viewed in Russia, or for that matter in France, given several of his novels were written in the language then translated.