Okay, here is the translation following your instructions: Fourth Secret Protocol

Author: [British] Frederick Forsyth
Publisher:
Publish Date: 2001-09-25
Features: The story begins with a major theft. The notorious thief, Lawrence, stole a priceless diamond belonging to a former Soviet spy, who was deeply hidden in the UK, and also casually took 10 top-secret British Defense Ministry documents hidden in a box. The thief, fully aware of the severity of the situation, anonymously returned the documents to the British Defense Ministry. This triggered a spy war of investigation and counter-investigation between the UK and the Soviet intelligence agencies. The story is not as simple as it seems, and it hides an even more shocking global conspiracy.