If it's not aids then Arafat's age would be the main reason for his death. Then it was Suha's decision do not allow any information regarding Arafat's death being published. Did you ever think why? But you are not interested in truth because your goal is to keep the blame pointing at Israel. Dahlan's popularity was on Abbas's way. And the second commits political killing of his rival.
Magnitude 4.2 quake strikes near Grand Coulee Dam in Washington (Reuters)
from the article: Fatah: Ex-Gaza strongman Mohammed Dahlan poisoned Arafat