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Krauthammer considers Vietnam and Iraq as battles in the Cold War and War on Terror respectively. He thinks the peace movement's party purges hurt the Democrats in the larger war.
Paul Greenberg makes a similar point that by turning its back on Lieberman, "…the Democratic Party will have lost its last honest-to-goodness Harry Truman/John F. Kennedy/Scoop Jackson figure." He thinks that will cause another Reagan Democrat exodus.
Rich Lowry thinks it could become Bush's Vietnam because he didn't use all the tools to win.
George Will thinks the War on Terror should be treated as a law enforcement issue.
Mark Steyn seems to think George Will is nuts. "Absent a determination to throttle the ideology, we're about to witness the unraveling of the world."