A severe supply breakdown has brought new attention to diplomatic contacts between two adversaries. Officials on both sides are using the same moment to press very different demands.

The Justice Department is preparing to seek an indictment against former Cuban President Raúl Castro, three people familiar with the matter told The Associated Press on Friday, as President Donald Tru...

An official statement noted that the meeeting "took place Thursday, May 14, against a backdrop of complex bilateral relations.”