Offices that are concerned with focus on the nation’s relationships with other countries.

I believe the answer is: Foreign policies

Foreign policies is used to maintain good relationship with other countries who might give a mutually beneficial prospect and punish other countries who somehow create problems to our country. This usually being done through trade regulations such as controlling the amount of tariff , quota, or creating embargo.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.