The Syrian military has used 300 mm rockets that are normally fired from the 9K58 Smerch multiple rocket launcher: a system that Syria was not previously known to have acquired.

Human Rights Watch (HRW) released a statement on 18 February saying that two 9M55K Smerch rockets with cluster munition warheads had been fired at a Kafr Zayta (Keferzita) north of Hama on 12 and 13 February and published photographs provided by local activists of an unexploded 9N235 high-explosive fragmentation submunition with markings indicating it was manufactured in 1991.

“The rocket is the largest type of cluster munition rocket to be used in Syria and contains submunitions that are more powerful and deadly than other types of submunitions,” HRW said.