The US is not going to pressure Israel to go to peace talks. (Consider AIPAC, and Obama the ineffectual.) Only some European countries will apply pressure, but this will not be enough. The UN is the Palestinians' only hope. If the PA does not go to the UN, it will get from Israel only an "interim" arrangement.
19-year-old construction worker seriously injured after falling from scaffolding in Harish (Haaretz)
from the article: Palestinian leadership divided over plan to seek UN recognition