I want to know the answer to the following question:
Which nation formed the nucleus of the Warsaw Pact?
All the background I'm provided with is that "The Warsaw Pact was created in reaction to the integration of West Germany into NATO in 1955 per the Paris Pacts of 1954, but it is also considered to have been motivated by Soviet desires to maintain control over military forces in Central and Eastern Europe.". Is that enough to answer the question?
Answer: no