keeping the nation out of foreign wars.
No, the United States is not a foreign corporation. It is a sovereign nation with its own government and borders.
Mexico.
the giving nation
Foreign exchange market
The political boundary of a nation and all the embassy of that nation in foreign countries.
A nation's overall plan for dealing with other nations is called its foreign policy. This policy is designed to protect the interests of the nation.
commerce The landlord nation's laws will apply unless the foreign gov't has a deal with our gov't that says otherwise.
The role that the president plays when he deals with foreign leaders is to negotiate on behalf of a nation. He acts as the representative of the entire nation.
Foreign relations are handled by the US Department of State ("State Department").
isolationism
NATO (The Host Nation) has the primary responsibility for foreign humanitarian assistance.