It might be worth it for the Lebanese to lease south of the Litany Mason-Dixie Line to Israel for 99 year contracts with a minimum of four additional contract renewals. So essentially 99 time 5 would be 495 years. Upon completion of the 5th contract; the population of the leased land would vote to determine if they want to remain part of Lebanon, or if they which to be annexed to Israel. Five centuries is probably ample time to discuss the matter.