Cosmologists have attempted to account for the day-to-day laws you find in textbooks in terms of fundamental 'superlaws,' but the superlaws themselves must still be accepted as brute facts. So maybe the ultimate laws of nature will always be off-limits to science.
Your generation and mine have had very little real experience; we've been severed from the direct experience of war by some very good things. By the end of the draft, and by the defeat in Vietnam.
Our enemies can deal a blow to us any time they wish. They did not wait for permission to do this. They do not deal a blow with prior notice. They do not take action because they can't.