Until 2015, Bangladesh witnessed militant attacks using improvised devices, grenades, and machetes on secularists, Awami League members, and the police since 2000. The Middle East-based Islamic State (ISIS), which began operations in 2015, had similar targets. The Bangladesh offshoot of ISIS was formed by former members of Jama’atul Mujahideen Bangladesh (JMB), Harkat-ul Jihad al-Islami (HuJI-B),…