in response to the hugely popular James Bond movies, every studio wanted to make a spy film. some of them are serious, some of them are not. most of the Bond films weren't that serious either. those are the best ones, anyway, realizing that the whole genre was rather silly to begin with (much like superhero movies). and there are tons of them, both serious and silly (and many that tried to be one and ended up the other, though bad comedy is never good).
I did that whole month on spy movie trailers, and I bet the trailers were better than most of the actual movies.
made by Twentieth Century-Fox Film Corporation this is far more comedy spy spoof than serious spy caper. and it works best that way. in fact, I'd say that at least the first Austin Powers movie aped this far more than any other film. many of the sights and sounds Myers used come right from this first movie.
James Coburn is great as Flint. one can tell he trained with Bruce Lee, even though his martial arts are not as polished. he puts a lot of effort into them, and makes it work. Gila Golan plays Gila. put a lot of effort into her name, but at least we know how to say it now. and she's not nearly as sexy here as she is in oh, say, The Valley of Gwangi. not sure why that is, but there you go.
the plot is three scientists want to help humanity become civilized and use their extraordinary smarts to invent a weather machine. this just never works. it's a fun movie, and moves along at just the right pace.