dollar diplomacy

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

• noun A policy aimed at furthering the interests of the United States abroad by encouraging the investment of US capital in foreign countries.
• noun A policy intended to safeguard a nation's foreign investments.

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

• noun The effort of the United States — particularly under President William Howard Taft — to further its aims in Latin America and East Asia through use of its economic power by guaranteeing loans made to foreign countries.

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

• noun diplomacy influenced by economic considerations