Arab Israeli War not working – Twilight Struggle Review

Had Israel and three adjacent countries, played Arab Israeli War, should have been -4 to the roll, one for control of each adjacent and 1 for Israel, CPU rolled a 6 and won. How is 6-4 which = 2 in the acceptable "win range of 4 - 6"?
Review by Qweyesth on Twilight Struggle.