The Pentagon released the 2019 Missile Defense Review, positing that "one of Iran's primary tools of coercion and force projection is its missile arsenal, which is characterised by increasing numbers, as well as increases in accuracy, range and lethality... its desire to have a strategic counter to the U.S. could drive it to field an ICBM, and progress in its space program could shorten the pathway to an ICBM". The review also asserted that "Iran has made extensive use of smuggling networks, managed both by its security forces and proxies, to provide advanced missile delivery systems to its clients", including Hizbollah and the Huthis.