The chances of winning a battle are considerably more favorable for the attacker than was originally suspected. The logical recommendation is then for the attacker to be more aggressive.Inspection of Figure 1 shows that when the number of attacking and defending armies is equal ( = ), the probability that the attacker ends up winning the territory exceeds 50%, provided the initial stakes are high enough (at least 5 armies each, initially.) This is contrary to Tan’s assertion that that this probability is less than 50% because “in the case of a draw, the defender wins” in a given roll of the dice.When = Figure 2 indicates that the attacker also suffers fewer losses on average than the defender, provided A is not small. With the innovation of several new versions of RISK further probabilistic challenges have arisen.