I believe that your people need to move to a smarter location from which you can set up a even more prosperous civilization. The Jordan River Valley is the new premiere location for any civilization trying to become a empire. This valley has the Mediterranean sea to its left and then the dead sea and natural fortifications to the right. This would make for a defensible position and amazing position for a world trading port. If you have any sense i would suggest that you get up and move to the Jordan River Valley.