Personally I think Abbas should let this issue ride. When a Palestinian state is created, well before 2012 I may add, the settlements or at a good portion thereof will be part of that state. Let's not be obstinate about what is in the big picture a triviality.
Israeli vehicle hit in drive-by shooting in West Bank; no casualties reported (Haaretz)
from the article: Abbas urges U.S. to step into settlement dispute