When he is not getting his own way he threatens to resign and walk in the hope Israel will respond to his threats with concessions. Abbas does exactly the same thing, when he is not getting his own way he says he will dissolve the PA and demand a binational state but without the PA he would not be in a negotiating position to demand anything. What Abbas & Erikat is play for the media in the hope the international reaction will be they must not resign so Israel must make concessions.
Woman moderately wounded by firebomb thrown at her car in north J'lem (Haaretz)
from the article: The Palestinian negotiator who cried wolf