A METAL drum found in Iraq that initially tested positive for a nerve agent could in fact contain rocket fuel, a US expert has said. Two mobile chemical laboratories found nearby might also have been used for mixing the fuel and not making banned weapons, the chief chemical weapons officer of the 4th Infantry Division added. Further tests on the tan 209-litre drum were expected in the coming days, said Lieutenant Colonel Valentin Novikov. Initial tests showed that the contents of the barrel tested positive for the nerve agent cyclosarin and a blister agent that could be a precursor of...