There is a very big difference that THREATENING to adopt a one state solution and actually getting the thing. Whilst Judea & Samaria is DISPUTED territory the pre 1967 is ISRAELI territory that neither the arabs, Obama, UN or anybody else can force Israel to accept. If the arabs demand a single state all they want because it won't get them anything if Israel doesn't want to give it to them and the vast majority of Israels jews are against a single state. Only the Israeli arabs wants a single state and as they are a disliked minority without a big voice. If at some point a 2 state solution any government on both left or right will make sure we unload hundreds of thousands of them into the arab state. There will be no 150,000 so called refugee return ... there is no place in Israel for even 1 palestinian if they want a state of their own. Even if we create this arab state 22% of mandate Palestine will NEVER be viable except for on paper & in the minds of idealists.
4 UN peacekeepers injured in Sinai and taken to hospital in south Israel (Haaretz)
from the article: Palestinians threaten to adopt one-state solution