Submarine espionage in: "Blind Man's Bluff" by Sherry Sontag and Christopher Drew.

The Cold War between Communist Russia and the United States starts immediately after the end of World War Two in 1945. The Cold War isn't really a war at all, but an economical, political and industrial race for supremacy. One of the chief elements that characterizes both the United States and The United Soviet Socialist Republic is espionage, or more delicately put "intelligence gathering". When two countries whose political centers are thousands of miles apart, and …

…the crew cannot be saved. Approximately 1/17th of the ocean is less than 800 feet deep. The loss of similar submarines to the U.S. Thresher such as the soviet Kursk, and the British Beluga is living proof of this dilemma. These setbacks to society and politics are comparatively small compared to the obstruction that would be caused by a nuclear war. Peace is not a cheap commodity and must be paid for at any price.