Montaner stands out as one of the early visionaries who bravely stood against the emerging totalitarian regime in Cuba and elsewhere - a distinction only a few can claim. His contributions have had such far-reaching impacts that, within a few short years, he has become a key source of understanding about the reality of the island under the control of the Castros and their allies.

Additionally, Carlos Alberto was one of the initial voices raising the alarm about the threat that Castroism posed to the entire continent. His numerous works on this subject were widely consumed by politicians and intellectuals across the hemisphere, including the United States. This vast reach significantly aided the fight against totalitarian subversion.