Purportedly the largest Muslim charity in theUnited States, HLF had been under investigation by the FBI for its alleged financing of the Islamic Resistance movement, or Hamas, for nine years.

CENTERFORSECURITYPOLICY: Shariah��s Black Box

The killers belonged to the Islamic Resistance Movement, better known as Hamas, the main Palestinian rival of both Mr Arafat and Mr Dahlan.

ECONOMIST: Palestine

Palestine's Islamic Resistance Movement, better known by its Arabic acronym Hamas, grew out of a Brotherhood charity in the West Bank and Gaza which sought and obtained recognition from Israel in the 1970s.

ECONOMIST: The Arab spring