so we now know there are two insurgencies

The NYT lead is mostly sourced to "a Western diplomat," but it also features interviews with two insurgent leaders and with "a former associate of [Saddam] Hussein" who was, the insurgents assert, released by the United States as a "goodwill gesture" toward them. The American negotiators are trying to exploit a presumed rift between Iraqi nationalist insurgents (who simply want the U.S. gone) and al-Qaida (which has international, pan-Islamic goals). Predictibly, the "nationalist" insurgents blame most of the insurgency's carnage on Abu al-Zarqawi and other "foreign" al-Qaida leaders. The United States is talking to the insurgents via intermediaries, the paper reports, and the communications are part of a larger strategy to encourage Sunni participation in the new government. It's unclear from the article whether the two insurgent leaders, identified by pseudonyms, were interviewed by the Times reporters in person.