Palestine could lease land to Israel

Palestine could lease land to Israel.

Israeli settlements in the West Bank are deemed illegal. 

(The Palestinian West Bank is land taken by Israel by force in the war of 1967, and the Israeli presence is thus against International law. )

Israel covets that land.

(There are many Israelis who want to live in Arab land with such a fierce craving that they break the laws of normal civilised life in attempts to oust the Arab residents. The political majority in Israel condones that barbaric behaviour, thus showing itself not competent to govern the area.) 

Land purchases between states have been agreed in the past.

(Admittedly with mixed success. Florida was acquired off Spain in 1819 for $5million of settled citizen claims. In 1848, by the Treaty of Guadalupe Hidalgo, the USA paid Mexico $15million plus $3million in claims for 1,360,000 square km of land, i.e. Arizona, California, western Colorado, Nevada, New Mexico, Texas, and Utah. The USA, in 1867, purchased Alaska off Russia at a fair price; $7.2million for 1.5million square km of land. Neither side particularly wanted the land.)

Could Israel occupy and enjoy Arab land legally? 

(Perhaps Israel could buy some land. But, if Palestine did not want to sell, perhaps they could agree to let out the land for an annual rent. Or negotiate a 99 year lease, as the British did with Hong Kong.)

Or are we living in a more barbaric, Post-Enlightenment, age?