After the attacks of Sept. 11, 2001, President George W. Bush often made a provocative claim: He argued that the U.S. was fighting a war without a typical battlefield. In effect, he said, this war is everywhere.
"Our enemies make no distinction based on borders," he said in a 2007 speech in Michigan. "They view the world as a giant battlefield and will strike wherever they can."
He said the U.S.