In his ongoing mission to declare Republicans who dare question America’s foreign policy “isolationist,” Sen. John McCain asked recently concerning Libya: “I wonder what Ronald Reagan would be saying today.” Columnist George Will answered McCain: “Wondering is speculation; we know this: When a terrorist attack that killed 241 Marines and other troops taught Reagan the folly of deploying them at Beirut airport with a vague mission and dangerous rules of engagement, he was strong enough to reverse this intervention in a civil war.” Will added: “Would that he had heeded a freshman congressman from Arizona who opposed the House resolution...