Frightening images have emerged from Gaza in the week since a fragile ceasefire took hold between Israel and Hamas. In one widely circulated video, seven blindfolded men kneel in line with militants arrayed behind them. Gunshots ring out in unison, and the row of men collapse in a heap as dozens of spectators look on. The gruesome scenes appear to be part of a Hamas effort to reestablish control over Gaza through a crackdown on gangs and criminal groups that it says have proliferated during t...
