A few large groups using sophisticated communications increasingly have come to dominate Iraq’s insurgency, a report released Wednesday said. The report from the International Crisis Group, a nongovernmental organization that tries to solve conflicts, noted the insurgency “no longer is a scattered, erratic, chaotic phenomenon.” “Groups are well organized, produce regular publications, react rapidly to political developments and appear surprisingly centralized,” the report said. It noted the insurgency, a predominately Sunni Arab movement, has grown “more confident, better organized, coordinated, information-savvy.” “That it has survived, even thrived, despite being vastly outnumbered and outgunned, suggests the limitations of the current counter-insurgency campaign,” the report said. It added that the insurgents’ emergence “carries profound implications for policymakers.” The report, “In Their Own Words: Reading the Iraqi Insurgency,” used voluminous insurgent communications culled from Web sites, videos, tapes and leaflets. Advice for U.S. The study was critical of the United States fighting “an enemy it hardly knows,” and called its labeling of insurgency groups as Saddamists, Islamo-fascists “gross approximations and crude categories.” It said U.S. and Iraqi forces must “reach out to the Sunni Arab community, amend the constitution and build a more inclusive policy.” […]