Suppose that USA, UK & France veto the Palestinian Statehood proposal and then it goes to UNGA under "Uniting for Peace" and the veto gets overridden with 140 nations. WHAT would be the far reaching effect? (a) UNGA does not have confidence with UNSC - at least its structure (b) 140 nations do not think US (at least) to provide Global Leadership (c) Loss of face. These are the things US/UK/France is worried about. They do not care about Israel or Palestine. They care about themselves!! It is called Realpolitik.
Fear of rioting, disorder prompt at Temple Mount prompt restrictions on Muslim worshiper (Haaretz)
from the article: Clinton refuses to rule out talks with PA unity government