I hate to always reduce American military intervention to a Sorkinism (
@Marvin the Martian), but I think Leo's advice to Bartlet about assassinating the defense minister is genuinely instructive. In response to Bartlet saying it's "just wrong," Leo says, "I know, but you have to do it, anyway." "Why?" "Because you won."
It's pretty easy to characterize a number of things we've done since the beginning of the war on terror (and honestly, since long before that) as clearly illegal under either US or international law (or both). But that doesn't mean they weren't justified or even necessary. We are the world's policeman now, and that might mean that our President simply can't be constrained by legalities. Is anyone sad we killed Soleimani? Does his death save future lives? Was his assassination nonetheless illegal? I think the answers to those questions are pretty obvious.
I see no analog in American history that would legally justify this week's strikes against Iran, but if we truly believed a nuclear Iran is a danger to world peace, and we truly believed we had the capability to prevent that, the argument can be made that we simply did what we had to do.
Please note I'm not
endorsing this view of presidential powers. I'm just pointing out that it exists, and it can be logically defended.