Sentence:  [Edward B.] Marks believed that [Milton] Cohen had paid spies everywhere to keep him up-to-date about impending political <WSD>overthrows</WSD> in the countries where he needed to stop, as he always escaped fine and dandy from every revolution he had to face. 
Meaning of the word marked with <WSD> tags:  A removal, especially of a ruler or government, by force or threat of force.