President Donald Trump said Monday that a precarious ceasefire agreement between Israel and Hamas should be canceled if Hamas doesn’t release all the remaining hostages it is holding in Gaza by midday on Saturday — though he also acknowledged that such a decision would be up to Israel. In comments to reporters after signing a series of executive orders, Trump said, “If they’re not here, all hell is going to break out” and said he feared many scheduled for release are actually already dead. Trump also said, however, “I'm speaking for myself. Israel can override it.” Trump's comments risked jeopardizing the already tenuous ceasefire between Israel and Hamas in Gaza after 15 months of war, with the existing framework for negotiations calling for the massive humanitarian and reconstruction assistance for civilians in Gaza.