Turkish President Recep Tayyip Erdoğan's Islamist ambitions seem to be seeking an international role in post-U.S. Afghanistan in alliance with the Taliban, Qatar, Pakistan and Malaysia. The trouble is, Turkey, among the new sharia alliance in the making, is the only country with institutional ties to the Western world. Biden has weakened himself and his country so badly that the superpower was reduced to the point of being blackmailed by NATO's only Islamist member. Turkey's Defense Minister Hulusi Akar has made it clear: "If the U.S. is to be in the Middle East, it must cooperate with Turkey." Afghanistan is...