"Cuban President Raul Castro waves as a Swiss Guard, left, and Archbishop George Gaenswein stand by him, prior to meeting Pope Francis, at the Vatican, Sunday, May 10, 2015. Cuban President Raul Castro received a warm welcome at the Vatican Sunday from Pope Francis, who played a key role in the breakthrough between Washington and Havana aimed at restoring U.S.-Cuban diplomatic ties, and later lavished praise on the pontiff for his ""wisdom."" (Fabio Frustaci/ANSA via AP) Photo: AP / ANSA"