Amid signs of a military buildup, President Gen. Pervez Musharraf threatened to use force in tribal areas along the border with Afghanistan if economic pressure fails to persuade tribesmen to identify al-Qaida and Taliban militants. Musharraf said in an interview Friday with Pakistan’s ARY television that foreign militants had to be “eliminated” from Pakistan. Pakistan last week imposed “economic sanctions” — blocking roads, shutting down shops and closing the main bazaar — in South Waziristan, a tribal area where militants have been active. The rugged region has been the focus of failed manhunts for al-Qaida members, including leader Osama bin Laden. Full Story