Sun Mar 5, 12:58 PM ET WASHINGTON (Reuters) - The U.S. presence in Iraq is hurting the worldwide war on terrorism and benefits only Iran and al Qaeda, U.S. Rep. John Murtha (news, bio, voting record) said on Sunday "The only people who want us in Iraq are Iran and al-Qaeda," Murtha said on CBS's "Face the Nation" political talk show. "And I talked to a top-level commander the other day and he said China wants us there also. Why? Because we're depleting our resources ... our troop resources and our fiscal resources. "... The war on terrorism is worldwide....