Read the excerpt from The Dark Game: True Spy Stories from Invisible Ink to CIA Moles by Paul
Janeczko.

The United States wanted desperately to know what
the Soviets were thinking. The big fear for the U. S. was
that the Soviets would attack West Germany without
warning, or in diplomatic language, with "a cold start."
The U. S. knew that the Soviets possessed nuclear
weapons. Would they use them on the West? This
question and others would need to be answered by
U. S. intelligence agents.