> I'm not sure if they still can do it, but the English made nuclear submarines.
Not really. The Polaris and Trident SLBM systems as well as the nukes they carry are US designs that the UK is allowed to use. And while their current PWR2 reactor is a British design, it is lacking. Therefore the next PWR3 design will be based on US S9G reactors.
> All this "Americans must realize you are now PARIAHS and will NEVER BE TRUSTED AGAIN" business will seem novel to people today, but this was true when I was younger and America had just invaded Iraq right after Afghanistan.
Nobody really cared about Iraq or Afghanistan. Sure, it was fashionable to pretend to care, to get on a high horse and tell the USian rabble how immoral they were. But at the same time, people on their high horses also were glad that there was no Saddam Hussein anymore and that the Taliban were beaten (seemingly, back then).
It's different now because the US threatened to invade the Kingdom of Denmark, a supposedly very close ally. Even the threat of doing that is a red line that will be very very hard to uncross after Trump.