Add this to the first paragraph in the Conflict rule:-

Unless the attacking Country is at war, e must also pay 1 Metal per 3 units, or fraction thereof, in the attacking presence in order to make an attack post using it.

Also, the the Population rule, change this sentence:-

The controller of a Territory may often encourage Breeding in that Territory by paying 1 of eir race’s food.

To:-

The controller of a Territory may often encourage Breeding in that Territory by paying 5 of eir race’s food, unless e is at war in which case it costs 10 of eir race’s food.