Natsku, thanks for the link to your article.
My personal opinion- alleged crimes should be prosecuted in the country where they were allegedly committed, unless there’s a very compelling reason to consider extradition. I’m don’t think there any compelling reason in your brothers case, but I can see why it suits them (the American administration), to go after him as an enemy of the state 
I hope thing work out ok for him and he is able to be tried here in the UK 
Trump- I woke up this morning to the Trump Native American racial slur being covered on Sky News. OMG, I read the comments last night but it looks so much worse, IMO, when you can see Trump’s body language and facial expressions during the clip where he’s talking to the former Code Talkers.
I agree with PP - could be actual sign of Alzheimer’s, no filter, word salad etc. Whatever the cause, he’s not fit to hold office.