CAIRO, Egypt - Terror leader Abu Musab al-Zarqawi has sharply lowered his profile in recent months, halting his group's Internet claims as the number of big suicide bombings in Iraq — his infamous signature form of attack — has fallen. Now, a man with close ties to Iraqi insurgent groups claims al-Zarqawi was shunted aside as political leader of a recently formed coalition of militants because they were angry at his propaganda efforts and embarrassed by his group's deadly attack on hotels in Jordan. But others caution that the claim is hard to verify — and that perhaps the insurgents...