"They are not negotiable—now or in the future," he said.

Iran's arsenal of ballistic missiles and armed UAV (Unmanned Aerial Vehicle) is considered one of the most formidable in the region, though the exact size of its inventory has never been publicly disclosed.

In recent months, US-Iran diplomatic efforts have shown signs of progress, with President Donald Trump saying on June 17 that it is acceptable for Iran to retain some ballistic missiles for self-defense. Israeli officials, however, argue that Iran's ballistic missiles pose an existential threat to Israel.