Taking his protest on the road, opposition politician Imran Khan kick starts a rally against US drones with hundreds of supporters in Islamabad They are heading to South Waziristan, an area bordering Afghanistan that has been hit by a number of drones. It is unclear if they will be allowed to go all the way. But their message is clear - it is one of peace. Even so there have been reports of threats made against the rally that include Americans and British anti -war activists. Al Jazeera's Caroline Malone reports from Islamabad.