A new statement purported to be from the terrorist network al Qaeda warns the United States to "stop your support for Israel against the Palestinians, for Russians against the Chechens and leave us alone, or expect us in Washington and New York." "Do not force us to ship you in coffins," it says. Chief investigative correspondent Yosri Fouda, for the Qatar-based Al-Jazeera satellite television station told CNN he received the document "through previously tested channels" and believes it to be authentic. CNN had no way to verify the authenticity of the statement.