ARLINGTON, Va., July 19, 2007 – Winning the war against terrorism requires warriors with multiple skills who can adapt to changing circumstances, Defense Secretary Robert M. Gates said here last night. Today’s anti-terror war is unlike any other conflict the United States has fought before, Gates told Marine Corps Association members. In Afghanistan and Iraq, “the men and women wearing our nation’s uniform have assumed the roles of warrior, diplomat, humanitarian, and development expert,” Gates pointed out, noting ruthless extremists employ roadside bombs and guerilla-style hit-and-run attacks to kill or wound U.S. and coalition forces, host-nation troops and innocent civilians....