Iran has provided Russia with a large number of powerful surface-to-surface ballistic missiles, six sources said, deepening the military cooperation between the two U.S.-sanctioned countries.

Iran¡¯s provision of around 400 missiles includes many from the Fateh-110 family of short-range ballistic weapons, such as the Zolfaghar, three Iranian sources said. This road-mobile missile is capable of striking targets at a distance of between 300 and 700 kilometers (186 and 435 miles), experts say.

Iran¡¯s defense ministry and the Revolutionary Guards ¡ª an elite force that oversees Iran¡¯s ballistic missile program ¡ª declined to comment. Russia¡¯s defense ministry did not immediately respond to a request for comment.