The quest for Mideast peace

I really enjoyed the article on Daniel Kurtzer. One issue I would have liked him to address is the money U.S. taxpayers spend to keep the peace. We pay billions to Egypt to keep them from invading Israel, and we pay billions to Israel to help them deter others from attacking. What does the ambassador think would happen if we stopped all aid, and told the parties we would consider resuming aid when they get serious about an accord?