Concerning Zionists in Eretz Yisrael, it was a Machlokes between the Brisker Rav and the Chazon Ish. Rabbi Chaim Yaakov Goldvicht asked both Gedolei HaDor if he would be allowed to open up a yeshiva (today it is Yeshivat Kerem B’Yavneh) for the Zionists. The Brisker Rav held they were the same as one who is not Jewish. The Chazon Ish, alternatively, held they were tinok shenishba and allowed the yeshiva to open up.
