The Palestinian group Hamas has joined calls for calm amid international furore parked by cartoons of the Prophet Mohammed, as a Taliban commander in Afghanistan said 100 suicide bombers had volunteered.Hamas "is prepared to play a role in calming the situation between the Islamic world and Western countries on condition that these countries commit themselves to putting an end to attacks against the feelings of Muslims," the organisation's leader Khaled Meshaal told a news conference Thursday. His conciliatory tone came a day after he warned the Western press was "playing with fire" by publishing the cartoons which have led to riots around the world.