Хаттаб
In August 1999, an armed incursion of 1,500 Islamic radicals, led by Chechen warlord, Shamil Basayev, and Arab jihadist, Ibn al-Khattab, in support of a Dagestani separatist movement, combined with a series of apartment bombings in Russia, gave Moscow sufficient reasoning for re-invading Chechnya, thus triggering the Second Chechen War, a conflict fought with significant Islamist overtones.