Why Iran Isn't Cheering

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The thorny nuclear negotiations with the West are likely to become even trickier. The delay in efforts to enforce a cease-fire in Lebanon is inflaming divisions within the Iranian regime on how to respond to the U.S.-backed package of incentives offered to Tehran in June. Before the crisis erupted, the momentum seemed to favor advocates of a pragmatic, positive response. But now the radicals are using the U.S.-backed Israeli campaign in Lebanon to push their case for a tough line. As an adviser to a senior conservative ayatullah puts it, "This has strengthened the hand of those who argue, 'If this happened to us, the only thing that would save us is a nuclear deterrent.'"

In the low-rent neighborhood of Tehran Pars, patrons at a café talk of how to balance faith with the politics of aiding Islamic militant groups. Mehdi Sedaghat, 27, a clothing-store clerk, speaks between bites of his bologna sandwich. "It's our religious duty to aid Muslims who are being killed," says Sedaghat, whose car bears a sticker on the rear window that reads INSURED BY IMAM REZA (Shi'ite Islam's revered figure). "But reality is reality, and we can't afford it." He quotes a Persian proverb: "If the lantern is needed at home, donating it to the mosque is haram [forbidden]."