Accompanied by Su-30SM multi-role fighter jets, the Su-34 planes dropped the 1,500 kg bombs on Islamic State targets in parts of eastern Syria controlled by the jihadist group. The Russian acronym KAB stands for "adjustable aircraft bomb" in English.
"The KAB-1500 guided bomb is known for its high accuracy. It is equipped with a laser seeker which helps to direct the bomb," Klimov said.
The KAB-1500L-Pr version, fitted with a 1,100-kg concrete-piercing warhead, is designed for attacking reinforced concrete fortifications, runways and rail bridges.
The KAB-1500L-F version is equipped a 1,180-kg blast warhead for surface targets, such as military and industrial facilities.
According to Klimov, these KAB-1500 bombs can pierce through twenty meters of soil or a three-meter reinforced concrete ceiling.
On September 30, more than fifty Russian aircraft, including Su-24M, Su-25 and Su-34 warplanes, commenced precision airstrikes on Islamic State targets in Syria at the behest of Syrian President Bashar Assad.
Syrian Ambassador to Russia Riad Haddad confirmed, for his part, that Syrian Army strikes, supported by the Russian Aerospace Forces, were carried out against armed terrorist organizations, not political opposition factions or civilians.
In the past thirty days, Russian military aircraft carried out total of 1,391 sorties in Syria, destroying 1,623 Islamic State targets, according to the Russian Armed Forces's General Staff.