Direct proof of use
SS-60 Mk4 conflict-use evidence in Yemen rests on photographed remnants from Brazilian ASTROS-family 300 mm cargo rockets. Armament Research Services assessed images and video from Yemen as showing SS-60 or SS-80 rocket motors, fins, and related components fired from ASTROS multiple launch rocket systems; it also noted that both rocket types were available with cargo warheads.
The broader incident record is corroborated by Human Rights Watch, Amnesty International, and the Landmine and Cluster Munition Monitor, which documented Brazilian ASTROS II cluster rocket attacks by the Saudi-led coalition in Saada governorate between 2015 and 2017. Those sources identify the delivery system as ground-launched ASTROS II rockets, while the ARES analysis provides the narrower SS-60-or-SS-80 rocket-family identification from the available imagery.
Sources: ARES Brazilian SS-60 Cargo Rockets, Yemen: Cluster Munitions Wound Children, Amnesty Brazilian Cluster Munitions 2017, The Monitor Saudi Arabia Cluster Munition Ban Policy
Timeline
The first public Yemen incident in this source set was the October 27, 2015 attack at Ahma near Saada city. Amnesty International reported suspected Brazilian cluster munition use after interviews with residents, victims, medical personnel, a witness, and a local activist, and Human Rights Watch later listed Ahma as an ASTROS II cluster rocket incident.
Later reporting extended the documented ASTROS rocket pattern. Amnesty identified remnants from the February 15, 2017 Saada city attack as an ASTROS II surface-to-surface rocket, and Human Rights Watch reported that the Saudi-led coalition launched Brazilian-made cluster munition rockets that struck a farm at Qahza on February 22, 2017.
Sources: Amnesty Brazilian Cluster Munitions 2015, HRW Technical Briefing Note, Amnesty Brazilian Cluster Munitions 2017, Yemen: Cluster Munitions Wound Children
Narrative
The documented user was the Saudi-led coalition side fighting Houthi-aligned forces, not Houthi possession of the rocket. Human Rights Watch's 2016 briefing recorded ASTROS II rockets among ground-launched cluster munitions used in Yemen since the coalition intervention began, with the stockholders listed as Bahrain and Saudi Arabia. The Monitor's Saudi Arabia profile likewise lists Brazilian-origin ASTROS II rocket attacks in Saada governorate and records Saudi use of cluster munitions in Yemen from 2015 to 2017.
The available public sources do not identify the firing unit, launch point, or every rocket variant used in each attack. They support a narrower conclusion: SS-60 or SS-80 ASTROS cargo-rocket components appeared in Yemen imagery, and Brazilian ASTROS II cluster rockets were documented in Saudi-led coalition attacks in northern Yemen during the 2014 Yemen Civil War.
Sources: HRW Technical Briefing Note, The Monitor Saudi Arabia Cluster Munition Ban Policy, ARES Brazilian SS-60 Cargo Rockets
