Two weeks ago, Hamas declared a “Day of Rage”—an invitation for Muslims to rise up worldwide and express their hatred of Israel and its works. “Head to the squares and streets,” one of its leaders, Khaled Meshaal, said from Qatar. Arabs should bum-rush the Israeli border, and Muslims everywhere should wage war. “You know your responsibility,” he said. The time to study jihad was over. “To all who teach and learn, this is a moment for the application.” These words brought back waves of anti-nostalgia for anyone who watched the rise of the Islamic State almost a decade ago, like hearing an old song that you hate, or smelling a madeleine covered in mold. “Hamas is ISIS,” Israeli and American officials have said repeatedly since October 7. In 2014, the ISIS version of Meshaal’s call came from the organization’s chief terrorist, Abu Muhammad al-Adnani: “If you are not able to find an IED or a bullet, then single out the disbelieving American, Frenchman, or any of their allies.” The message was very do-it-yourself: “Smash his …