Revolutionary Guard Admits to Attacking America?

This seems an awful lot like an admission. 

Iran’s elite Revolutionary Guards said they would not bow to pressure and threatened to “punch” the United States, in their first response to Washington’s plan to list them as a terrorist organization, newspapers reported Saturday.

Local press in the Iranian capital of Tehran quoted Revolutionary Guards leader Gen. Yahya Rahim Safavi saying that he could understand Washington’s ire towards the group because of their recent successes against the United States.

Iran has claimed again and again that they are not supporting opposition forces in Iraq despite overwhelming evidence to the contrary.  And here we have the leader of their elite corps claiming that they have had “recent successes” against America.  What does that mean?  There are no declared or mutually acknowledged conflicts between the Revolutionary Guards and the U.S. Are they finally admitting that they are in active battle against America? 

Seems like it. 

And if so, isn’t it an act of war when an official military unit of a foreign government acts under orders to engage us in battle?