BAGHDAD (AP) — Abu Murtada al-Moussawi answered the call last summer from Iraq's top Shiite cleric to help save the country from the Islamic State group, but after less than three months on the front lines he and several friends returned home because they had run out of food. The clerics hope to prevent a repeat of last summer's collapse of Iraq's demoralized army in the face of the Islamic State group's lightning advance, which saw the extremists capture the country's second largest city Mosul and sweep south toward the capital. In the upscale Baghdad neighborhood of Harthiya, a representative from al-Sistani's office recently urged his followers to donate food and money to the Shiite militias — warning that many fighters had already deserted. [...] donations of money, clothing and food have begun pouring into the local Shiite mosque and charity office.