Is the Proposed Iraq-US Military Agreement a Back Door to An Iran Strike?

Faiz at Think Progress notes the following troubling detail in the proposed agreement, which a Dawa MP has objected to:

The Americans insist so far that is they who define what is an aggression on Iraq and what is democracy inside Iraq…if we come under aggression we should define it and ask for help.

This means that the US could use the status of forces agreement to justify an attack on Iran.

As Faiz puts it, "Since the administration is unlikely to get an Iran war authorized through Congress, it’s instead trying to sneak it through the Iraqi parliament."