One hundred days after he was overwhelmingly elected to succeed the late Yassir Arafat as Palestinian Authority president, Mahmoud Abbas faces a confluence of domestic and external pressures that both allies and detractors say put in question his long-term political survival.

As his dysfunctional ruling Fatah movement struggles to come to terms with the absence of Arafat, its historic leader, Israel is denying him concrete concessions that would help bolster his presidency, and militant groups are straining at the limitations of a self-imposed ceasefire.