Amid the escalating U.S.-Iran conflict, North Korea's longstanding missile technology transfers have equipped Tehran with key weapons systems deployed in recent attacks. The liquid-fueled ballistic missile program that Iran relies on today stems almost entirely from North Korean designs, according to defense expert Bruce E. Bechtol Jr.

Iran's Qiam short-range missile, which has struck U.S. facilities and Gulf targets, is an upgraded version of the North Korean Scud-C. Pyongyang shipped around 200 Scud-Cs to Iran starting in 1986 and constructed the production factory there. Iranian crews continue to depend on North Korean engineers and components for operations. Similarly, the No Dong missile family, sold to Iran in the late 1990s with about 150 units, forms the basis for Tehran's Emad and Ghadr missiles fired at Israel and American bases. North Korea also delivered 19 Musudan missiles in 2005, leading to Iran's Khorramshahr-4, now fitted with cluster warheads optimized for regional threats.

This partnership, spanning over 40 years, originated from Iran's need for arms during its 1979 revolution and war with Iraq, paired with North Korea's quest for hard currency after losing Soviet support. Iran provided Pyongyang with roughly $3 billion annually until recent years, funding not only its own arsenal but also proxies like Hezbollah, Hamas, and the Houthis. North Korean technicians remained on-site, refurbishing factories until the current war erupted.

Bechtol, co-author of Rogue Allies: The Strategic Partnership Between Iran and North Korea, described the arrangement as a "rogue strategic pipeline" actively arming Iran's war effort against U.S. troops and allies in the Arabian Gulf. "The evidence is there," he said, noting that mainstream coverage often overlooks the connection. For North Korea, the collaboration is purely transactional, generating revenue amid sanctions, while Iran views it as advancing its revolutionary goals.

A 2021 United Nations report documented the resumption of joint missile development between the two nations in 2020, including transfers of critical parts. Though dated, it underscores persistent violations of Security Council resolutions. Analysts anticipate further cooperation as Iran seeks to rebuild missile and nuclear facilities damaged in U.S. and Israeli strikes since late February.

North Korean leader Kim Jong Un has seized on the conflict to justify his nuclear buildup. He stated that U.S. actions against Iran validate Pyongyang's retention of atomic weapons. State media condemned the strikes as aggression, though claims of direct missile offers to Tehran were debunked as false.

The axis extends beyond bilateral ties, with Russia and China also sustaining Iran's capabilities through components, air defenses, and economic lifelines. This proliferation network poses ongoing risks to U.S. forces and regional stability, highlighting the challenges of countering rogue state collaborations.