It’s all a stupid game. Israel killed some people, so Iran “had to” respond to save face, and then Israel had to do the same. Once everyone is satisfied that everyone knows both countries have very big and girthy missiles, they can finally back down from a war no one wants (hopefully).
The UN is supposed to be a toothless, executively dysfunctional institution, that’s a feature, not a bug. Its members are nations, whose entire purpose is to govern their regions of the planet. If the UN itself had the power to make nations do things, it wouldn’t be the United Nations, it’d be the One World Government, and its most powerful members absolutely do not want it to be that, so it isn’t.
It’s supposed to be an idealized, nonviolent representation of geopolitics that is always available to nations as a venue for civilized diplomacy. That’s why nuclear powers were given veto power: they effectively have veto power over the question of “should the human race continue existing” and the veto is basically a reflection of that. We want issues to get hashed out with words in the UN if possible, rather than in real life with weapons, and that means it must concede to the power dynamics that exist in real life. The good nations and the bad nations alike have to feel like they get as much control as they deserve, otherwise they take their balls and go home.
It’s frustrating to see the US or Russia or China vetoing perfectly good resolutions and everyone else just kind of going “eh, what can you do, they have vetoes,” but think through the alternative: everyone has enough and decides “no more veto powers.” The UN starts passing all the good resolutions. But the UN only has the power that member nations give it, so enforcement would have to mean some nations trying to impose their will on the ones that would’ve vetoed. Now we’ve traded bad vetoes in the UN for real-world conflict instead.
What that “get rid of the vetoes so the UN can get things done” impulse is actually driving at is “we should have a one world government that does good things,” which, yeah, that’d be great, but it’s obviously not happening any time soon. Both articles mention issues and reforms that are worthy of consideration, but the fundamental structure of the UN is always going to reflect the flaws of the world because it’s supposed to do that.