Erekat vs. Erekat - which one do you believe?

From JPost:

Israel and the Palestinian Authority have agreed on the “core issues” that will be discussed during their direct talks, Saeb Erekat, the Palestinian chief negotiator, said over the weekend.

Erekat claimed that PA President Mahmoud Abbas and Prime Minister Binyamin Netanyahu agreed at their meeting in Washington on Thursday that the peace talks would be resumed from the point where they were stopped two years ago under then-prime minister Ehud Olmert.

From YNet:

Chief Palestinian Negotiator Saeb Erekat said Saturday that Prime Minister Benjamin Netanyahu is trying to apply stall tactics to negotiations, and that all of his suggestions thus far have been rejected by the PA.

Erekat told Jordan's al-Dustour Newspaper that the Israeli prime minister suggested forming 12 committees dedicated to the various issues of the peace process, but his suggestion was rejected.

The chief Palestinian negotiator said that Netanyahu's "procrastination" has effectively made the peace talks grind to a halt: "There are decisions to be made, so that first and foremost we create a vision," he told the newspaper, adding that such action is the only thing that would allow negotiations to start at the point at which they were left off during the Olmert Administration.

So which Erekat do we believe?

The answer is simple: neither.

Why should we believe any word that comes out of an established liar's mouth?