Believe it or not, the 12 day war between Iran and Israel was exactly that, and the reaction of the Iranian people was not as uniform (in either way) as one might guess. You could walk on the streets and see some "Hit them Israel" and other similar writings on the walls (the Iranian people were not exactly pro Israel before the war). And yet people could not sleep due to constant bombardment, they had to follow the evacuation orders by the IDF etc.