ABC News is reporting that the U.S., for the last two years, has been advising and funding a "Pakistani tribal militant group responsible for a series of deadly guerrilla raids inside Iran." The group "has taken responsibility for the deaths and kidnappings of more than a dozen Iranian soldiers and officials." Their preferred M.O. is to kidnap people, then execute them on camera, though it's unclear whether they did this in a recent slaying of "at least 11 members of the Iranian Revolutionary Guard riding on a bus in the Iranian city of Zahedan." All in all, they sound like really nice fellas.
This means that the U.S. is a state sponsor of terrorism. It also means that the U.S. has committed acts of war against Iran, predating and so far as we know exceeding anything the Iranians have done in Iraq.
I doubt it will be more widely reported or kept in mind, however.