A good rule of thumb for conservatives is that If Nancy Pelosi favors something, oppose it. Pelosi liked the administration's April 7 cruise missile strike on Syria. Time to roll out another truism: there is an exception to every rule. A fair number of conservatives don't see it that way. A strange conglomeration of hardcore Trump supporters and die-hard Trump-haters objected to the attack variously on populist, constitutional, and Realpolitik grounds. To make the situation even odder, they effectively joined the leftist lunatic fringe (where Pelosi can often be found), which opposes almost any American military action based on strained...