The quote from the Chazon Ish is related by Chareidi publicist, R’ Moshe Schonfeld, who was a Talmid of the Chazon Ish and Brisker Rav. It was published by him in an article titled “בין עקבתא דמשיחא לאתחלתא דגאולה” in Av 5734 in Niv HaMoreh and Digleinu. It also appears in his work בין ארץ ישראל למדינת ישראל עמ’ 37 and is discussed in על משכנות הרועים לר’ אלעזר שולזינגר עמ’ ק, which is readily available on Otzar HaChochmah at this address: https://tablet.otzar.org/he/pages/?&restore=1&pagenum=99&book=16909.