Fayyad has a head on his shoulders. I assume he wants to keep it there. It is one thing to go up against one group ( Hamas ) but to take on a second group ( the PA ) is a might too much.
U.S. says it killed 10 AQAP Islamist militants in four air strikes in Yemen since April 23 (Reuters)
from the article: Fayyad to Haaretz: I will not lead a Palestinian unity government