A senior military source said that "the preventive action was made possible thanks to groundbreaking intelligence information received by the Intelligence Directorate in the past year. During the past year, a dedicated arena was established in Military Intelligence and the Air Force that focused on Iran and preparations for a wide-scale attack." According to him, "After the attack in October, the Intelligence Directorate made an unprecedented concentration of effort to create an opening strike against senior Iranian military officials and nuclear scientists."