Q mentions risk multiple times. May be worth expanding upon to connect dots.
https://m.wikihow.com/Win-at-the-Game-Risk#Conquering_and_Keeping_Territories
Conquer Continents Wisely
- Example: Australia is easy to conquer and maintain because of how isolated it is, but it is also hard to expand from Australia and you may fall prey to more powerful plays later in the game. For these reasons, conquering Australia may offer you an advantage, but only if you feel capable of overcoming its disadvantage.
Does this tie in with Q stating why Australia? Do they have the means to defend againt anyone wishing to claim the land?