President Barack Obama arrives in Cuba on Sunday for a 48-hour visit, making history by venturing into what was once enemy territory and sparking enthusiasm among Cubans who have seen theirCommunist government vilify 10 previous U.S. leaders.<br />The visit, the first by a U.S. president in 88 years, would have been unthinkable untilObama and Cuban President Raul Castro agreed in December 2014 to end an estrangement that began when the Cuban revolution overthrew apro-American government in 1959.<br />Welcome signs with images of Obama alongside Castro popped up in colonial Old Havana, where Obama will tour on Sunday afternoon shortly after landing.
