Tests by Danish and American experts indicate there is no chemical warfare agent in mortar shells unearthed last week in southern Iraq, but more testing is needed to confirm the findings, the Danish military reported Wednesday. The preliminary findings cast doubt whether the suspicious shells will become the “smoking gun” proving that Iraq still maintained supplies of banned chemical weapons when the United States and its allies launched the war last March. The U.S.-led Iraq Survey Group conducted tests on five shells and none of them showed traces of chemical agents, the Danish army said in a statement released in Copenhagen. Full Story