Washington has a strong hand to play, but it must do so wisely. If in fact Mr. Trump wants to do away with both governments in Cuba and Venezuela, or if he is really after regime change only in Cuba, this will lead to failure and invariably anger the country’s democratic partners in Latin America and Europe. With the exceptions of Nicaragua, Bolivia, Uruguay and Mexico, the region wants Mr. Maduro out. But it will not support Mr. Trump in any effort to dislodge the Cuban dictatorship.

Instead, Mr. Trump should continue to press Cuba to join its efforts to remove Mr. Maduro. The country can play a crucial role by affording him a safe haven and by participating in the transitional arrangements that would ensure a democratic transition: freeing all political prisoners and allowing all opposition leaders to run for office in free, fair and internationally supervised elections, re-establishing freedom of the press and association, gradually and peacefully reducing its footprint in Venezuela. Mr. Trump should engage Russia to persuade the Cubans to do so. And he should remember that after all, there is no carrot and stick approach without a carrot.