Definitions for "Abu Omar al-Saif"
Abu Omar al-Saif (Arabic: أبو عمر السيف ) or more fully Abu Omar Mohammed bin Abdullah al-Saif, also called Mohammed bin Abdullah bin Saif al-Jaber and Sheikh Muhammad ibn 'Abd Allah at-Tamimi (1968/1969 – November, 2005), was a Saudi Wahhabist Islamist militant operating first in Afghanistan (1986-1988) and later in the North Caucasus (1996-2005) as the mufti of Arab fighters in Chechnya, allegedly with close ties to Osama bin Laden.