Photo Sunni volunteers for the fight against the Islamic State during their first training session at a military base in Amiriyat Falluja, one of the last cities of Anbar Province in government hands. Credit Ahmad Al-Rubaye/Agence France-Presse — Getty Images AMIRIYAT FALLUJA, Iraq — More than a thousand Iraqi Sunni fighters stood at attention, dressed in camouflage but holding no weapons, as the tribal leader began exhorting them to fiercely battle the militants of the Islamic State, taking up rhetoric tinged with Arab notions of vengeance. “It is now time for revenge for our martyrs,” said the sheikh, Falih al-Essawi, who was dressed in a military uniform. He checked off the destruction wrought in their lands by the Islamic State, or, as he called them, “the rats of ISIS ”: 25,000 homes leveled, he said, bridges burned, the economy devastated. He and other speakers made an explicit plea to […]