African Union and Somali government forces have captured the town of Bariire, a strategic militant base in the south of the country, officials and witnesses said Saturday. Commanders said the Islamist al-Shabab group fled following heavy fighting outside the town in which the joint troops approached from three directions. Bariire was one of al-Shabab's strongholds in the south and only 45 kilometers (27 miles) from Mogadishu, the country's capital....