From the publisher's website:
A Modern Military Adventure for Basic Roleplaying
A Chinese nuclear submarine bearing a dozen missiles,each with a nuclear warhead, reported a major mechanical malfunction and would return to port. The ship is late.
World governments receive a broadcast from the captain of the lost submarine, demanding that Japan, Taiwan, and South Korea surrender to the Peoples Republic of China by midnight — to be absorbed into that great nation.
If they refuse, a random city in those countries will be destroyed each hour thereafter. Civil panic has overwhelmed the government’s ability to deal with this terrorist threat.
This is a modern-day military adventure for Basic Roleplaying, one of the winners of the second BRP Adventure Contest.