Trump's executive order tightening U.S. sanctions on Cuba is a warning to other countries, expert says

The tightening of U.S. sanctions on Cuba is being interpreted as a warning to countries like Russia and China. There are also hints of potential military action in Cuba after the Iran war, and an intention to discourage large-scale emigration. Frustration is growing within the Cuban American community as U.S. attention has shifted to other international conflicts.