Cuba tried to send a secret message to Trump - not through diplomatic channels, but through a businessman. An unnamed individual personally delivered a letter to the White House, bypassing all standard procedures.

The move is unusual and speaks volumes about Havana's degree of isolation. When a state has to send letters through intermediaries instead of embassies, that's not diplomacy - that's desperation.

Meanwhile, the Pentagon is preparing contingency plans for Cuba, and Trump is already hinting that "after Iran, Cuba is next." Cuba responds in its own way: sending doctors around the world while the US sends destroyers.

The Cold War never truly ended 90 miles from Florida. And with Trump opening fronts on all sides - Iran, China, trade wars - Cuba is just another name on the list. Will anything come of the secret message? In diplomacy, silence after a letter is an answer in itself.