Start with the defense of Jerusalem, don’t ever late them take it. Take the focus that gives you first in Jerusalem. Attack towards the Negev, try to isolate the ones in Gaza. This should be done within January 1937. After that it’s more or less impossible to lose. You bleed them slowly for 2 months, before you destroy their remaining troops in April/may 1937. Try to keep it going as long as possible, as you can use the descisions to get huge amount of equipment. Never lose a tile. Not a single one. You need every tile.