Hamas is a Palestinian group based in the Gaza Strip. It has a political wing and an armed wing. Both are actively struggling for Palestinian independence.
Founded in 1987, Hamas has been a counter group to the Palestinian Liberation Organization (PLO) and has been internationally shunned as a terrorist organization because its military wing periodically attacks Israel and its citizens.
An elite Israeli unit has carried out an attack in the Gaza Strip, killing a senior Hamas military commander. The raid left one Israeli soldier dead and threatens to escalate conflict between the two sides.