The UN already mandated a Palestinian state -- back in 1947. It had borders and everything. Just recognize the PA as embodying this state. Maybe the PA will prove willing to negotiate about the borders. Settle for 1967...or most of it. Offer Israel 95%.
U.S. says working on initiative to de-escalate Syria fighting, with focus on Aleppo (Reuters)
from the article: Report: France 'won't rule out' UN creation of Palestinian state