Official war is over, but there are still all kinds of violence; and where there is not violence there is the subjugation by threat of violence. Much of this has to do with US policy w.r.t. the Americas for the last ~200 years and more recently the War on Drugs.

Defining "peace" as a lack of official war is utter nonsense.

We only have to look south across a single border to see a country very much at war.