"There is no first attack in Karate"

for me, the preemptive word is not the right word to use, cause by my definition (the first form of attack - includes forms of hostility- not always physical) I never strike preemptively. But for instance, if a guy has a gun on him, his having a gun and showing a tendency to violence towards me, to me is as good as him striking first. I prefer to channel the attackers energy to take him down, as you attack you expose minor openings, use that enemy's first strike to open him and take him down in as few hits as possible.