For most people it didn't become terrorism until the second building was hit. That's when it was clear the first situation was no accident.
The president is to be commended for going to a place where too much excess liability has dramatically affected how people live because they can't get access to medicine.
There are no precedents in law dealing with a tragedy of this type where somebody intentionally caused the death of 5,000 people and you sue somebody else to blame them for that murder, that is new.