President Trump is increasing pressure on Cuba's government, elevating concerns that his continued threats to invade the Caribbean island could become reality. Why it matters: A U.S. invasion of Cuba would mark the most dramatic confrontation between Washington and Havana since the 1962 missile crisis — and the boldest test yet of Trump's campaign to expand America's influence in the Western Hemisphere under his version of the Monroe Doctrine. State of play: U.S. surveillance and reconnaissance