The Palestinian militant group Hamas has agreed to form a unity government led by Mahmoud Abbas, president of the Palestinian Authority and head of rival Palestinian faction Fatah. But who is Hamas? What is their relationship with Fatah, and what might Hamas gain from reconciling with them? Here are five key questions about Hamas.
The Hamas leader's return to Palestinian territory, his first visit since 1967, coincides with the party's increased sway after an eight-day conflict with Israel and UN recognition of Palestine.