“One irresistible reality grows from Hamas’s complicated, competitive relationship with Hezbollah. For Hamas, Hezbollah is not only a source of weapons and instruction, it is a mentor and role model.

Hamas’s desire to best Hezbollah’s achievements is natural, of course, but, more to the point, it is radicalizing. One of the reasons, among many, that Hamas felt compelled to break its cease-fire with Israel last month was to prove its potency to Muslims impressed with Hezbollah.

Another reality worth considering concerns theology. Hamas and Hezbollah emerged from very different streams of Islam: Hamas is the Palestinian branch of the Sunni Muslim Brotherhood; Hezbollah is an outright Iranian proxy that takes its inspiration from the radical Shiite politics of Ayatollah Ruhollah Khomeini. But the groups share a common belief that Jews are a cosmological evil, enemies of Islam since Muhammad sought refuge in Medina.

Periodically, advocates of negotiation suggest that the hostility toward Jews expressed by Hamas is somehow mutable. But in years of listening, I haven’t heard much to suggest that its anti-Semitism is insincere. Like Hezbollah, Hamas believes that God is opposed to a Jewish state in Palestine. Both groups are rhetorically pitiless, though, again, Hamas sometimes appears to follow the lead of Hezbollah.”