 They were not enforced, however, with the result that the actual size and equipment of the force in 2002 exceeded what was permitted.Initially, Yasser Arafat set up a string of 14 overlapping and often competing security forces, each one controlled by a rival political or former guerrilla chieftain, but all of them ultimately loyal to him and his Fatah party.After Hamas had established a PNA government in March 2006, it formed its own security service, the "Executive Force", headed by Jamal Abu Samhadana, who was killed by Israel three months later.