Earlier quoted context omitted.
> Almost all of that sector's activity involves offensive activity. What do you mean? As in invading other countries?
He is quite correct though. By calling it "defence" industry, it is insinuated that this is always a moral right use of arms. In reality one would have to look on a case by case basis to see which use really qualifies as defence. In many cases I would not call it defence, for instance, if money is used to overthrow other governments and so forth. Or the Falklands War as an example - technically one could claim the UK…
Why wouldn't you call a military action to stop Argentina invading them "defence"?