Israel publicly and unconditionally renounces all claim to any land in the West Bank which is not settled at this time and promises that this land will be given to Palestine when a peace-deal is concluded. The exact scope of this area can be determined using satellite photos. Israel also (publicly and unconditionally) promises that it will not seek to incorporate the settlements that at this moment have less than X inhabitants into Israel. Now you can let the settlers build all they want, no more Palestinian land will be swallowed up by the settlements and the added number of settlers will not have any impact on Israeli claim to the land which the settlements lie on.
ISIS claims responsibility for bombing in Baghdad suburb; death toll hits 21 (Reuters)
from the article: Abbas: Peace talks at impasse, but we are searching for solution