Review
This movie puts on screen what all Italians know since decades directly or indirectly Andreotti is behind all major events happened in Italy in the last 45 years. This is what we know as we all knew that virtually all politicians at all level were (and are) robbing the public funds and make private deals with business men.
The movie shows exactly this we know it but we do not have the evidences.
Sorrentino tries to bridge this gap by putting together a lot of informations that make a pretty clear scenario but without evidences. The result is a portrait of a divinity you know that is there you know that everything happens because of his will but on earth everything happens by chance so that the fact that Andreotti is the mastermind of everything becomes a matter of divine faith.
The strength of the movie rests on the capacity to describe a personality that is so powerful that does not need to speak does not need to go on TV he is able to make things happen in a way that only Andreotti knows. Andreotti is above the politics above the Church above finance above mafia he is depicted as a power that stands on its own someone who uses all the different leverages to rule.
Andreotti got it away with his trials and only Andreotti knows how. For a man of his power it was the least you could expect.
At the end Italians have to acknowledge that in the 20th century Italy was ruled by the King (shortly) Mussolini and Andreotti. But if you remember the Glossary shown at the beginning of the movie through the Loggia P2 Sorrentino suggests that Berlusconi could be the person in charge to continue the job. Whether this is the will of Andreotti or not is a matter of faith.