Under the bleachers of a West Bank stadium, a dozen men from Gaza live in a former changing room, blocked from returning home by the war that erupted more than two-and-a-half years ago. Among those stranded is Sameer Abu Salah, 54, who had been working odd jobs in Israel’s commercial hub of Tel Aviv, where wages are far higher than in his home city of Khan Yunis in Gaza. He had then gone to Nablus, in the north of the occupied West Bank, where he is now trapped. “I entered (Israel) only four day...