N.R. Jenzen-Jones Images recently posted to Twitter and Facebook appear to show the remains of an RBK-250 ZAB-2.5 incendiary cluster munition, apparently documented in Derna, in eastern Libya. ZAB (Zazhygatelnaya Aviatsionnaya Bomba; incendiary aircraft bomb) series weapons include a range of unitary incendiary bombs as well as cargo munitions. The RBK-250 ZAB-2.5 has a nominal weight of