Cuba is mourning its revolutionary leader and former President Fidel Castro. <br/><br/>Castro died on late Friday and has plunged the country into nine days of mourning.<br/><br/>The body of the 90-year-old is due to be cremated at a private ceremony in Havana on Saturday. <br/><br/>Some world leaders have been paying tribute to the 20th century icon. Castro came to power in 1959 and ushered in a Communist revolution, defying the US for decades.