A propaganda video released by Hamas on Thursday showing American Hersh Goldberg-Polin, one of six Hamas hostages killed last weekend in Gaza, should be an “immediate wake-up call to the world” to focus on securing a cease-fire deal, his parents said.

“We are in the midst of the seven day Jewish mourning period after burying our son Hersh,” Rachel Goldberg and Jon Polin said in a statement on Thursday shared by the Hostages and Missing Families Forum, which represents families of the…