In the famous fairy tale, the Persian Queen Scheherazade strings out stories for a thousand and one nights until her matricidal husband, the king, finally accepts her in his household. On Tuesday, as I sat listening to Manouchehr Mottaki, Iran's genial foreign minister, come up with yet another enticing response to the latest Western proposal for halting the country's alleged nuclear weapons program, I wondered again whether Tehran was taking a tactical cue from its ancient forebear. Is Iran playing the West the way Scheherazade played the king, by making occasional agreeable noises—thereby sowing self-doubt among its adversaries—and avoiding conclusive...