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Russia covertly aiding Iran's supersonic cruise missile programme

Moscow is providing technical assistance to Tehran for developing advanced ramjet propulsion systems capable of powering cruise missiles at hypersonic speeds, according to reports. The collaboration represents a significant escalation in military cooperation between the two nations.

LSN India · 2 September 2026

Russia covertly aiding Iran's supersonic cruise missile programme

Russia is engaged in a clandestine effort to help Iran develop cutting-edge supersonic cruise missile technology, focusing on ramjet propulsion systems that could enable weapons to travel at multiple times the speed of sound. The classified programme underscores deepening defence ties between Moscow and Tehran amid international scrutiny of their military collaboration.

Ramjet systems operate by compressing incoming air at high speeds to sustain combustion without moving parts, making them suitable for sustained hypersonic flight. Such technology would significantly enhance Iran's strike capabilities and complicate air defence efforts across the region. The development of hypersonic cruise missiles has become a strategic priority for several military powers seeking advanced weapons platforms.

The partnership reflects broader geopolitical realignment, with Russia and Iran strengthening defence cooperation despite international sanctions and diplomatic isolation. Technical expertise transfer in missile development represents one of the most sensitive areas of military assistance, typically reserved for close strategic allies.

The collaboration carries implications for regional security dynamics, particularly concerning potential threats to neighbouring countries and international shipping lanes. Defence analysts note that successful development of hypersonic cruise missiles would represent a qualitative leap in Iran's military capabilities, requiring sophisticated engineering and sustained technical support.