Al-Qaeda chose to attack US civilians in New York, Kenya, Tanzania and US military in Yemen preemptively.

That does fall under my definition of "unprovoked aggression"

Clinton chose to attack preemptively in Bosnia, Somalia, Iraq and in Afghanistan in retaliation.

Bush chase to attack the Taliban in Afghanistan in retaliation and The regime in Iraq preemptively.

That does not fall under my definition of "unprovoked aggression"