Bought this based on some of the recommendations on amazon but, boy, what a disappointment. The storyline is seriously disjointed, with some cuts in editing which serve to confuse rather than elucidate. The relationship between two of the main characters, which drives the storyline, is unconvincing and has no emotional or philosophical depth. Indeed, none of the human relationships make much sense either, particularly R and his superior officer. A few effective action sequences are not enough to make up for the shortfalls in the dramatic narrative.
I love all sorts of films but this is one of the only times I have been tempted to stop watching before the end. I wouldn't have missed much if I had.