I mean, sure, I guess. But I'm willing to bet you're glad we don't take this principle to its logical conclusion in daily life, right?

You're glad that anybody stronger than you can't just decide to take what's yours. You're glad you don't have to constantly fight to protect yourself and your family. You're glad that we have a system that enforces the laws of the land over the "law of the jungle".

And, of course, the question of what's "just" is often a matter of perspective. If you're protecting your "way of life" you may be able to convince yourself that that's just. But I'm guessing the people you're killing would disagree. Are the Jews protecting their way of life by killing innocent Palestinians in Gaza? Is taking those millions of innocent lives justified by the actions of a few Hamas soldiers?

Are Hamas protecting their way of life by killing innocent Jews? Do the Palestinians have a right to restore their way of life to the way it was before Israel was formed in Palestine?

This "law of the jungle" stuff made a degreee of sense when we lived in the jungle. When our entire worlds were a few hundred miles wide and we fought each other with sticks and sharpened rocks. The idea that we can apply the same rules to conflicts where we have drone strikes and nuclear weapons is, well, partially why we're in such a mess today.