Abbas's Fatah in rare congress as succession talk builds

Palestinian president Mahmud Abbas's Fatah party holds its first congress since 2009 on Tuesday as the 81-year-old leader seeks to close ranks and fend off a key rival. While Abbas's advisers insist the congress is being held because it is overdue, some analysts see it as an opportunity for him to sideline allies of his exiled long-time rival Mohammed Dahlan.
Talk of who will eventually succeed Abbas as Palestinian president has intensified, with the ageing leader not having publicly designated a successor.
A recent hospitalisation for a heart test has only added to such talk, but Abbas has maintained that he has no intention of stepping down anytime soon.
Arab nations have reportedly been pressuring Abbas to allow Dahlan to return in hopes that it will help lead to a smooth transition.
The congress to last up to five days in the occupied West Bank city of Ramallah is expected to be key for the future of the secular party and the Palestinian Authority it controls.
It is to include elections for Fatah's central committee - in which Abbas serves as president - and its revolutionary council, considered Fatah's parliament and which has more than 120 members.
The 1,400 Fatah officials invited to attend the congress are to vote for 18 members of the central committee and 80 seats on the revolutionary council, while the rest are to be nominated.
Observers see the reduced number of officials to vote - down from more than 2,000 in 2009 - as part of a move to exclude Dahlan supporters.
Now in exile in the United Arab Emirates, Dahlan was expelled from Fatah in 2011 and has faced a series of legal cases since.
Abbas's term as Palestinian president officially ended in 2009 but there has been no election since due to an ongoing dispute between his party and its main rival, Islamist movement Hamas.
The Palestinian parliament has not met since 2007.
Fatah - which controls the West Bank - and Hamas have been at loggerheads since the latter seized the Gaza Strip in a near civil war in 2007.
Dahlan fell from grace in June 2007 after the humiliating rout of his forces by Hamas in week-long street battles that saw the Islamists expel Fatah from the coastal enclave. The Gaza-born politician was expelled from Fatah in 2011 over allegations of financial corruption and murder. The Palestinian high court in 2015 upheld a presidential decree lifting Dahlan's parliamentary immunity, sparking condemnation from civil society activists. That "cannot be taken out of context: one of political infighting within Fatah around the person of lawmaker Dahlan," political analyst Jihad Harb said of the lifting of his immunity.