Until Israel returns ALL land illegally occupied in 1967 (or alternatively enters final status negotiations with no pre-conditons) then there is absolutely no chance of peace whatsoever. Until that point Israel of course does not deserve peace. A country which illegally occupies another country should expect resistance to their land theft.
UN: Gaza could be 'uninhabitable' by 2020 if trends continue (AP)
from the article: The hot-air summit