Lebanon’s Iran-allied Hezbollah movement is keeping a secret arms depot in the heart of Beirut, risking a new disaster there, warned Israeli Prime Minister Benjamin Netanyahu in a video address to the United Nations General Assembly on Tuesday.Referring to the deadly explosion at Beirut’s port last month, Netanyahu pointed on a map to the city’s Janah neighbourhood saying: “Another explosion could happen here.”On August 4, a powerful blast hit Beirut’s port, killing more than 90 people and injuring 6,000 others. The blast was caused by tons of ammonium nitrate stored in the port without proper…