foreign policy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The diplomatic policy of a nation in its interactions with other nations.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A government's policy relating to matters beyond its own jurisdiction: usually relations with other nations and international organisations.
• noun Used retrospectively, the sum of a leader or government's dealings and relations with other nations.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a policy governing international relations