I think it’s right for the UK and Europe in general to invest in defence. Europe is on its own; nobody else will defend the continent. If Europe can’t defend itself then it probably won’t be long until the US or Russia or China decides they’d like a piece of European land for themselves (well Russia is already trying to take European land of course).
Sure it looks unlikely that the US will become more humane soon. The best hope is that a more humane leader wins the US presidency in 2028.
As for a multipolar world, I don’t think it would necessarily be better. China is the most powerful nation after the US, and I don’t think China is a bastion of humane government, given their political repressions, such as their treatment of Uyghurs in Xinjiang. Then there’s Russia and their invasion of Ukraine.
Hopefully the world will become more humane but I guess that terrible things like wars and genocides may continue.
I don’t like the current government of the US, but I also don’t like the current government of Iran. I wouldn’t see either government as a “necessary evil” - I would rather see both countries have more humane governments.
Also I wouldn’t see the “weakening” of the US or Iran as a goal. I think they just need more humane leadership, who can wield power in a moral manner.
Iran killed civilian protestors, but yes it seems the US killed civilian children. I think both regimes are bad.
My view is that antisemitism is a very real issue, but yes I agree with your point that Israel’s current government uses the label of antisemitism to dismiss genuine, non-antisemitic criticism of Israel.
I don’t like the current governments of the US or Russia, but let’s remember that Russia is currently waging an invasion of a European country while the US is not. I hope Europe can build sufficient defence capabilities to prevent further Russian aggression towards Europe, or indeed any future American aggression towards Europe.