Multiple books is also alright. This is not for any research or educational work - simply reading them for interest.
I've you're looking for a really comprehensive and accurate history of the Cold War, then I don't think you'll find a more comprehensive history than the The Cambridge History of the Cold War. It consists of three volumes, all filled with chapters on the Cold War written by different scholars from all over the world and tackling all important subjects you might want to know about.