Perhaps when it came out, this movie could be watched as a light-hearted romantic comedy, but 30 years later, it's hard to buy a story about an international arms dealer selling automatic weapons to Saudis - and the 'spunky' feminist investigative reporter who loves to hate him - as a 'comedy', let alone a 'lighthearted' one.
The movie is marketed as an 'international adventure with Roger Moore', so you think you're getting a James Bond-type film with lots of action; instead, what you get is a slow-moving, heavy-footed piece of cheese - Swiss cheese, in fact, given the number of plot holes.
Moore plays arms dealer Scott, who finds himself living next door to an investigative journalist (played by Susanna York) in Brussels. He's in town to sell some hard-core weapons to the US military; she's in town to cover war games. I think he is supposed to be a charming-but-insincere international playboy, while she is supposed to be a highly principled feminist (!) just trying to get ahead in a man's world.
Unfortunately, the whole thing never really gets past the level of farce: it's just one stereotype after another. Her portrayal of 'feminism', for example, seems to consist entirely of shrieking about how terrible men are and storming off in a huff. And we never actually see her doing any 'reporting' at all, unless putting a piece of paper in a typewriter just before getting distracted by something (a phone call, a daydream) counts as 'reporting'.
Now this kind of stereotyped farce works fine when you've got lots of action, a fast-moving plot, evil villains, stylish art directing, great music, etc. But this movie hasn't got any of that. On top of which, the supporting actors don't seem to know whether they are in a comedy, a drama, or an action film.
Bottom line: Only for die-hard fans of Roger Moore or British films set in European countries during the 1965-75 period.
