The withholding of PA money by Israel is an inconvenience which can be overcome. The stakes are now too big to bend to this Israeli pressure. My suggestion: Borrow the same amount from Arab sources such as Kuwait, Gulf states, etc., using the withheld money as collateral. The PA might want to punish Israel too for this action, so seek some European trade sanction against Israel, or the like. But the most important thing for the PA is to stop the settlement activity so that Israel will have no reason to drag peace talks indefinitely. When this happens, peace talks will start in good faith. To achieve the goal of stopping settlement activity, the PA must become member state of the ICC. Either do it after asking the UNGA to recognize you as a non-member state and then go the the ICC with an internationally recognized status of a state (the best option, and sure to be realized), or go directly to the ICC as was done with UNESCO. Good luck, but you must take action in order to survive, not just complain.
Iranian parliamentary panel gives conditional nod to nuke deal (Reuters)