If anything, this shows that the PA will achieve nothing without leverage. After the US telling the PA/PLO to get screwed, and after decades of achieving nothing, have to wonder what point there is for the Palestinian people to keep the PA/PLO going. The US and Israel have made pretty clear that without leverage, nothing will ever change.
Palestinian teen arrested for allegedly rioting in East Jerusalem (Haaretz)
from the article: Shalit deal throws Hamas a lifeline