If confirmed, Russia's direct involvement in Iran's missile program would signal deepening military coordination between the two countries and expand Iran's strike capabilities beyond what it could achieve alone.
Most affected
Iran — Gains access to Russian technical expertise and materials for advanced missile development. U.S. and allied nations — Face a potentially more capable Iranian missile threat with Russian technical backing.
Likely next
Whether the Trump administration or other governments release formal assessments confirming or detailing the scope of Russian support to Iran's missile program.