Yeshivas Ponevezh on Thursday upheld its mesorah of hanging an Israeli flag on the yeshivah’s roof on Yom Ha’atzmaut. The minhag began after the establishment of the state at the instructions of the Ponevezher Rav, HaGaon HaRav Yosef Shlomo Kahaneman, z’tl, to fly the flag on the roof of the yeshivah for eight hours.