In Iran, more than 20 people have been arrested on suspicion of involvement in the murder of Hamas leader Ismail Haniyeh. Among those arrested are high-ranking intelligence officers, military officials, and staff members from a military boarding house in Tehran, reports The New York Times. The publication notes that the assassination of the Hamas leader following the inauguration of Iran’s new president, coupled with the harsh response, indicates that it was a devastating security failure for Iran’s leadership. According to two Iranian officials, a specialized intelligence unit of the Revoluti…