Israel spent years preparing for the operation against Iran’s nuclear and missile programs.

Axar.az reports, a security official tells The Times of Israel, including building a drone base inside Iran and smuggling precision weapons systems and commandos into the country.

The effort hinged on tight joint planning between the IDF and the Mossad intelligence agency.

According to the official, Mossad agents set up a drone base on Iranian soil near Tehran. The drones were activated overnight, striking surface-to-surface missile launchers aimed at Israel.

In addition, vehicles carrying weapons systems were smuggled into Iran.

These systems took out Iran’s air defenses and gave Israeli planes air supremacy and freedom of action over Iran.

The third covert effort was Mossad commandos deploying precision missiles near anti-aircraft sites in central Iran.

The operations relied on “groundbreaking thinking, bold planning and surgical operation of advanced technologies, special forces and agents operating in the heart of Iran while totally evading the eyes of local intelligence,” says the official.