Sources inside the government and out tell us his name is Carlos Alberto Castro . He was released along with David Gross , in exchange for two convicted Cuban terrorists . Upon his release from prison , he was described by President Barack Obama as `` one of the most important intelligence agents that the United States has ever had in Cuba . '' Sarraff , a Cuban national , spent two decades in prison .
Sources inside the government and out tell us his name is Carlos Alberto Castro . He was released along with David Gross , in exchange for two convicted Cuban terrorists . Sarraff , a Cuban national , spent two decades in prison .