There’s a film I saw sometime back in the 1980’s, possibly about Eastern European terrorists. Film starts off in a snowy scene with some fairly gruesome deaths. The end sequence has something to do with a bunch of balloons (red, white and blue) in like an embassy setting. The balloons themselves are either linked to a bomb, or they are filled with some sort of poison gas. They all have to be released through the roof of the building. There’s a guy who’s trying to do this and he’s having to walk around near the upper rafters of the building so it gets pretty suspenseful. Saw it on TV so it could be a TV movie. It was in color, and in English. Any of this ringing a bell with anyone?