It is not fair to compare this movie to much later or modern action movies. The Italian touch makes for a plot that is far from superficial. I enjoyed this movie from the late sixties. It is interesting to see how an European approach differs from the way Hollywood would have done it. There are details of plot and acting that could never have appeared in an American film from this time. There is a certain sophistication in the directors' approach. The roles are never overplayed, but underplaying adds to the undercurrent of excitement and realism. The setting in Rome does much to enhance the air and atmosphere of the 60's. The music scores are very good and in harmony with the whole plot. There is an element here of genuine artistry not often found in mainstream movies of our day.