shmoel- on a serious note (I posted another remark that may have been denied access), whether the brisker family came to Eretz isreol pre-state is irrelevant. This is where the rov found refuge and flourished. If the brisker have the same ‘shittah’ as the satmarer rebbe- let them leave eretz yisroel and move, as the satmarer rebbe did.
As far as Kastner goes, this is an old debate and you were not there, so you don’t know what happened. All I know is that the satmarer rebbe, R’Yonasan Steiff and his family, countless of other jews (over 1600 to be exact) were saved from the clutches of the nazis. You ,and all of those who are damning Kastner, never saved one jewish soul, so it would be best for you to be humble and keep quiet.