Washington — The U.S. intelligence community has been exploring how Cuba might respond to an American military action, CBS News has learned. Earlier this month, as the U.S. intelligence community tracked the Universal, a sanctioned Russian-flagged oil tanker bound for Cuba, analysts at the Pentagon and Defense Intelligence Agency, the U.S. military's intelligence arm, started to analyze what the Cuban response would be to an American attack on the Caribbean country. Work on developing military options for President Trump has begun, according to two U.S. officials with knowledge of the matter. Both requested anonymity because they were not authorized to speak…