My guess is that he is not long to this world. Ill health is the best explanation for his retirement.

Hopefully, this will lead to some reforms.

If the US is interested in helping the Cuban people and hastening reforms, it should take steps to formally abandon the claims of US Cuban emigré community.

The comment that Talleyrand made about the Bourbon restoration (aka Bourbon Renewal^*) applies here, “They have learned nothing and they have forgotten nothing.”

While any people who wish to return should be free to do so, and any investment should be allowed, allowing old claims to be pressed will damage the country, and it is a most powerful argument against reform, that old crazies, and (in some cases) outright terrorists, would come back and take it all.

^*Yes, I know, bad pun.