The proof is that they set preconditions that thay knew that no government in Israqel - left or right - would accept. The Palestinians think they can achieve their goals through the UN Security Council. What they don't realize is, that when Israel's vital interests are concerned, no outside body will bew able to forc3e its - or their- will on any Israeli government.
U.S. House Speaker Boehner brushes off call for his ouster (Reuters)
from the article: Palestinians: Peace negotiations with Israel have ended