This is a new age in the proxy war in which Iran is pitting both sides against one another and the US.
This from the New York Sun:
Iran is supporting both Sunni and Shiite terrorists in the Iraqi civil war, according to secret Iranian documents captured by Americans in Iraq.
The news that American forces had captured Iranians in Iraq was widely reported last month, but less well known is that the Iranians were carrying documents that offered Americans insight into Iranian activities in Iraq.
An American intelligence official said the new material, which has been authenticated within the intelligence community, confirms “that Iran is working closely with both the Shiite militias and Sunni Jihadist groups.” The source was careful to stress that the Iranian plans do not extend to cooperation with Baathist groups fighting the government in Baghdad and said the documents rather show how the Quds Force — the arm of Iran’s revolutionary guard that supports Shiite Hezbollah, Sunni Hamas, and Shiite death squads — is working with individuals affiliated with al Qaeda in Iraq and Ansar al-Sunna.
This puts to bed any notion that the Sunni/ Shiite divide acts a sort of waters edge when it comes to supporting terror.
This news also shines a light on Iran’s intentions in Iraq. While it was clear that they were supporting the violence, it was assumed that they were throwing their weight behind the Shiites and that that support was (at least in part) ideologically motivated. These documents show us that Iran is more interested in maintaining and controlling the chaos than it is in any ideological end.