Hezbollah's covert Unit 910, also known as the 'Black Unit' or 'Shadow Unit,' poses an increased threat to Israeli and Jewish communities worldwide following the assassination of Hezbollah leader Hassan Nasrallah. The unit, under the command of Talal Hamiyah, operates in the Americas, Europe, Africa, and Asia and is capable of launching significant revenge attacks on short notice. Unit 910 has been involved in high-profile attacks, including bombings in Buenos Aires and Bulgaria. It maintains strict secrecy in its operations and relies on local networks and criminal organizations worldwide.