HAVANA - Fidel Castro looked frail but alert and even playful in a series of official photographs taken during a meeting with Brazil's president on Tuesday, the first images of the ailing Cuban leader released in about three months. Wearing a tracksuit and tennis shoes that have become his trademark since he fell ill, Castro is seen seated and grinning, his beard well-trimmed and his hair combed as he talks with President Luiz Inacio Lula da Silva. In some images, Castro is seen pretending to snap pictures with a camera. The pictures were given to reporters as Brazil's leader left...