Such an event should be allowed providing it is in good taste and controlled. The fact that Israel beat the pants off the Arab League after being attacked in the period around 1948 is the real disaster from the Arab perspective. And then Israel did it two more times after being attacked again by Arabs bent on destroying Israel. The Arabs have nothing to celebrate but if they want to acknowledge the disaster from their perspective so be it. A good response from Israeli students would be to attend the event and keep laughing.
UN aid chief says no warring parties observed Yemen truce (Reuters)