However, the Human Rights Watch report comes after a Russian television station in Syria filmed a pair of RBK-500 ZAB-2.5SM incendiary cluster munitions mounted to a Russian Su-34 multi-role fighter stationed at Russia’s main air base there. Earlier this month, photos posted to social media following a supposed incendiary attack showed pictures of incendiary bomb fragments with similar markings to the RBK-500s filmed on the Russian aircraft in June.