I'm not sure what you are trying to say with your post but that old quote has nothing at all to do with law or legality. Anyway the legal case here is clear, the only problem is that Israel refuses to abide by international law. These "provisional" borders that Lieberman is suggesting is an attempt for Israel to continue to attempt to annex land illegally.
Official: Top Burundi general assassinated in the capital (AP)
from the article: Erekat: Lieberman's reported map of Palestinian state is a 'joke'