washingtonpost: "'Our soldiers and our Marines have the inherent right of self-defense,' Kimmitt said. 'Whether that is somebody who is trying to defend their city, which seems to be somewhat of a ludicrous concept, or somebody who's just out to kill an American, both of those will find the full force of the United States Marine Corps and the coalition brought down on them.' "

Why is "trying to defend their city" "somewhat of a ludicrous concept"?