After months of Taliban attacks on civilians and government targets, Pakistan's military has launched a fresh offensive against the group's fighters in South Waziristan.<br /><br />The offensive includes 28,000 troops whose aim is to target the heartland of the Pakistani Taliban, the territory in South Waziristan ruled by Hakimullah Mehsud, the group's leader.<br /><br />But the campaign has also sparked a mass exodus of civilians, with estimates of around 150,000 people fleeing the volatile zone to seek refuge elsewhere.<br /><br />Imran Khan reports from Islamabad, Pakistan's capital.
