The pre-67 borders are a compromise between what's legal, i.e. United Nations Partition Plan for Palestine, and what Israels right-wingers want, i.e. Eretz Israel. Both are extremes that won't be a real solution, but the pre-67 borders are a good and just compromise, and of course compensation or right of return for those original inhabitants, that were expelled in the different wars, be them the small number of jewish Palestinians in the Westbank, or be them the huge number of arab Israelis in Israel.
Jordan foreign minister says to speak with Kerry on Israel-Palestinian conflict (Reuters)
from the article: Barak: Israel facing regional 'earthquake' and diplomatic 'tsunami'