Ballistic missile program of Iran

The ballistic missile program of Iran is the largest in the Middle East and plays a key role in Iran's military and defense strategy, pursuit of regional power projection, and other geopolitical goals. Analysts assess that the Islamic Republic of Iran's varied arsenal of short-range and medium-range ballistic missiles are intended to function as "deterrence through retaliation", as an immediate response option to attacks by foreign adversaries.

Source: Wikipedia — Ballistic missile program of Iran (CC BY-SA 4.0)