A majority of Iraq’s law enforcement network has congregated in the northern and western portions of the country to contain the efforts of the Islamic State to restart the reign of its illicit organization, giving Shia and Sunni the leeway to reignite previous rivalries. “We need larger forces to control rural areas and restrain lawless tribes in the south,” Army Lieutenant Colonel Salah Kareem said. “This is a difficult job for now as most troops are busy with fighting [IS].” The religious disputes turn legal as members quarrel over farmland, construction contracts, and other land ownership issues, security courses said. The net impact of the disagreements disrupts Baghdad’s efforts to bring new investments to the oil and gas sector in areas affected by three years of domestic strife. Stable oil output from Basra is key to Baghdad’s wealth, which accounts for 95 percent of the government’s revenues. […]