There were more than enough rumors and full-blown theories last week to tantalize those who were curious about President Francois Mitterrand's motive in expelling Soviet officials from France. Perhaps the most intriguing hypothesis centered on the unsolved murder of a top French intelligence officer two months ago. One morning last
February, three maintenance workers clearing snow from a winding country road 40 miles north of Nice came upon an empty Peugeot. The door on the driver's side had been left open, and the radio was blaring. The work team soon discovered why. Sprawled in...