Yes, you would need a different rule for each of those values. One way you could distinguish the rules for US and out of US is to set a session variable with a boolean value and in the rules. Then in the shipping rule, set up the trigger you want (between those values for the column that you're looking at) and then add an additional trigger. The condition on the additional trigger would be Based on session variable value. You could then distinguish between the two types of rules that way.