Csar is redundant and repetitive.
And I don’t know anything about that story, but WHY would people not celebrate upon the Jews’ being able to go to the Kotel, upon a war which could have caused thousands of deaths being averted, and upon the reunification of Yerushalayim? It wasn’t the Jews who started the war— this is probably the best-case scenario. I would say it was definitely a neis, seeing as I think there are a lot of nissim which happen which we don’t acknowledge.