"My basic duty is not to cling to office, nor even more so to obstruct the rise of people much younger, but to pass on experiences and ideas whose modest value arises from the exceptional era in which I lived," the letter said.
He's going without a fight, although my guess is leadership will stay in the family.
(I don't know why, but I just picture the will being read aloud: "To my daughter, I give my heart and soul. I leave in her posession 50 thousand dollars. To my son, I leave my home in Santiago. And to my brother Raul, whom I trust very much, I leave Cuba." Raul: "Yes!")
Read all about it.