One day after the U.S. President Donald Trump’s bold proclamation of a “historic dawn of a new Middle East,” the much-vaunted ceasefire deal came under strain as Israel and Hamas accused each other of violating the fragile agreement.

Hostages were beaten unconscious, tortured, starved, and chained up inside tunnels for months by Hamas in Gaza, family members of those released on Monday have said. As Israel continued to celebrate the return of 20 abductees, details have begun to emerge about their brutal treatment at the hands of Hamas.