The reason why many sane minded people dont agree with Liebermans plans is because what it does is not just an exchange of land but an exchange of Israeli citizens as well. The Arabs who live in the areas that Lieberman proposes to give back have always lived there and since the establishment of the state +-60 years have always been citizens of the State of Israel with the same rights as every other Jew, Christian .... that lives in Israel. I dont see a reason in why these citizens should suddenly be forced into a Palistinean state , they are not Palisteneans and never claimed to be. Its the equivilant of the USA tommorow handing over California to Mexico and simply stating that everyone living there is now no longer an American citizen.
Magnitude 4.2 quake strikes near Grand Coulee Dam in Washington (Reuters)
from the article: Katsav to summon Olmert on Thursday to form government