You need to remain silent and only discuss things with your lawyer.
You can not assault someone because they have your property.
Your history doesn't change that.
If you feared for your safety, then you might have a self defense argument for whatever you had to do to remove yourself from the threat. However, it's not cut and dry and WE don't know what evidence/testimony the STATE will present. Understand, that it is "society" that is harmed by criminal activity and it's not a "You vs. Him" in court, it's the State of Iowa versus YOU.

