I was thinking of a comedy.
Along the lines of “The Mouse that Roared” and “The Mouse on the Moon” of the early sixties, a satire of modern politics.
Nigerian astronaut is, as in the original piece, stuck on a forgotten Soviet space station. For twenty-thirty years.
Somehow Nigeria (or fictional African country) hears of it and insists on rescuing its lost astronaut, itself. For some complex reasons of state, the world powers compete to provide a rocket, sabotaging each other, etc. And while this goes on, the poor guy on the space station putters around unknowingly with a forgotten Soviet doomsday device...
To add to the movie scenario, the original cry for help was ignored all these years by being mistaken for a Nigerian scan fax (this scam started by mail, then fax spamming, finally email). But one day, someone, a kind-hearted but not terribly bright person finally responds to the scam email ...