The Izz ad-Din al-Qassam Brigades, named after Izz ad-Din al-Qassam, is the military wing of the Palestinian organization Hamas. Currently led by Mohammed Deif, IQB is the largest and best-equipped militant group operating within Gaza today.
Qassam rockets launched from Gaza, on display at an Israeli police station at Sderot, 2009.
Al Qassam militants rappelling during a training exercise in Gaza, January 2013
Hamas, an acronym of its official name, Harakat al-Muqawama al-Islamiya, is a Palestinian Sunni Islamist political and military movement governing the Israeli-occupied Gaza Strip since 2007.
The aftermath of the 1994 Dizengoff Street bus bombing in Tel Aviv
Yagur Junction bombing was a suicide attack on the Egged 960 bus in 2002. Hamas was responsible for about 40% of the 135 suicide attacks during the Second Intifada.
Ismail Haniyeh became the prime minister of the Palestinian National Authority in 2006