SIRAKANO, Uganda — At age 45, after giving birth to 13 children in her village of thatch roofs and bare feet, Beatrice Adongo made a discovery that startled her: birth control. "I delivered all these children because I didn't know there was another way," said Adongo, who started on a free quarterly contraceptive injection last year. Surrounded by her weary-faced brood, her 21-month-old boy clutching at her faded blue dress, she added glumly: "I fear we are already too many in this family." (snip) Under President George W. Bush, the United States withdrew from its decades-long role as a global...