Hostage killings and new demands cast doubt in White House that Hamas wants a deal AxiosHamas’ hostage killings, Netanyahu complicating cease-fire deal, U.S. official says NBC NewsDaily Briefing Sept. 5: Day 335 – PM speaks to world, says hostage deal many steps away The Times of IsraelWhy’s Netanyahu so insistent that Israel control the Gaza-Egypt crossing? Al Jazeera EnglishU.S. Effort to Broker Mideast Cease-Fire Gets a New Sense of Urgency The Wall Street Journal