@dohabunny you may want to look at the South African boycott experiment to see how host countries (represented in international sports organization s) HAVE banned that apartheid state. Even before the UN acknowledged the boycott. It is not impossible nor unheard of. Israel is just another apartheid state that should be treated the same way.
As I mentioned, being international does not justify it. Qatar could have taken a bold decision to refuse hosting and gained the respect of many.