An Interim solution will never work unless it has a specific timeframe to arrive to the permanent status. Otherwise, Israel will just continue occupation claiming that the time is not ripe yet to implement the permanent one. This is precisely what Israel wants, to avoid relinquishing its control over the West Bank, and keep placing "realities on the ground". Ultimately, the world will realize that Israel never wanted to give up Judea and Samaria, and will be forced to annex it, along with its millions of Arab inhabitants, who will be granted Israeli citizenship.
Firebomb thrown during demonstration in northern Israeli town of Umm al Fahm (Haaretz)
from the article: A different approach