DUBAI - Taunting President Bush during the videotaped killing of a sobbing, blindfolded U.S. hostage, Abu Musab al-Zarqawi boasted that the al-Qaida fighters he commanded “love death just like you love life.” “Killing for the sake of God is their best wish,” the insurgent leader said, drawing a knife to hack off the head of his kneeling victim. “Getting to your soldiers and allies are their happiest moments, and cutting the heads of the criminal infidels is implementing the orders of our Lord.” By the time he was killed Wednesday in a U.S. airstrike, al-Zarqawi was more powerful as a...