For two years, they have gathered in Hostages Square - parents, brothers, sisters, extended family and friends clutching photographs and signs reading "bring them home". They have campaigned, protested and prayed for the return of loved ones taken in the 7 October attacks. But now the mood has shifted. The chants of frustration have turned into songs of celebration. The tears that once fell in despair are now tears of relief. The square, normally a site of weekly demonstrations, has transformed