THE CHALLENGE aka Surrogate (1970) – This made for tv movie aired in February 1970. The storyline involves a downed satellite that contains American national defense technology. It landed near a fictional Asian nation which is closely allied with Communist China.

The fictional nation’s navy recovered the downed satellite, but the U.S. navy blockaded them and, as this telefilm opens, is preventing the other nation from taking the satellite anywhere. The smaller nation is a client state of Communist China, as stated above, and China intervenes on their behalf.

Neither the U.S. nor Red China want to see this incident escalate into an all-out war, so they agree to a solution. Each side will send one man to a small nearby island. Whichever surrogate manages to kill the other within five days will have «won» the downed satellite for its side.

Yes, that’s a silly premise from a real-world angle…