Sound bite: It's this century's nightmare: jihadism, radical, violent Islamic fundamentalism. Their goal is to unite the world under a single jihadist religious caliphate.
Coverage is so concentrated on the primary hair-splitting among each party's candidates that we're seeing little mention of the battle lines that will come once the nominations are set -- and those battles will be lasting a long time. This has already shaped up to be the clearest divide: the are-we-at-war? question.