It is a National Power.
the Vietnam war
The gunboat policy refers to the pursuit of foreign policy objectives with the aid of naval power. It is a display of military power.
setting foreign policy
The Senate has influence in the area of foreign policy through its power to approve treaties.
Germany's foreign policy was conservative and sought to preserve the balance of power in Europe
Giving or not giving money to foreign-policy plans
The power that Congress is allowed to control is the second amendment of the Bill of Rights, the right to bear arms.
Presidents can back up their foreign policy decisions with hard power. A good example of hard power is through the use of military force.
National government
setting foreign policy
It can limit what the President can do because, for example, it has the power to declare war and to approve or deny funds.
If a country is poor the international politics dominate her and for the richer states these are power games.