In Jewish tradition, we generally commemorate the ends of wars rather than their beginnings (e.g./i.e. Chanuka, Purim). The commemoration of the rebirth of Israel as the Jewish homeland in the past century is popularly (in non-Haredi circles) celebrated on 5 Iyar, the day when the declaration of independence from British rule was made, which triggered a war with the Arab world. Is there any rabbinic authority who proposes that the actual commemoration should occur on 10 Adar, Ink Flag Day, when the war ostensibly ended (and without bloodshed) or, at least, addresses the issue?
"The Ink-Drawn National Flag" by Micha Perry, licensed CC BY-NC-SA 2.0 by Government Press Office