Thirty years on, gas attack still poisons Iraq's Halabja

As a teenager Kamal Jalal saw two of his sisters killed when Iraqi dictator Saddam Hussein's forces launched a gas attack on the Kurdish town of Halabja. Now three decades later at the age of 47 this Iraqi Kurd remains reliant on a machine to help him breathe -- and is still waiting for compensation over a massacre that became a byword for brutality.