ujm – How, exactly, is today�s NK any more radical than Rav Blau�s NK that (to take one of numerous examples) protested together with Yasser Arafat�s PLO against Israel in front of the UN? That occurred during the lifetimes of both Rav Blau and the Steipler Gaon.
You are aware that R’ Amram Blau ???? left Yerushalayim and the leadership of the NK when he remained in ’65, are you? That approximately was when they began going downhill. The passing of R’ Velvel Brisker ???? five years earlier, combined with their sidelining of R’ Amram, left them without any responsible adults in the room. The letter was addressed to his “colleagues in Yerushalayim”, that doesn’t hint anything to you? How much do you even really know about the history of NK? If you did your homework you would understand the absurdity of your question.