I want to know the answer to the following question:
As early as what year was a spy ring set up in the Yugoslav party?
All the background I'm provided with is that "Although Tito was formally an ally of Stalin after World War II, the Soviets had set up a spy ring in the Yugoslav party as early as 1945, giving way to an uneasy alliance.[citation needed]". Is that enough to answer the question?
Answer: yes