4강: the four "most important" nations for Korea: USA, China, Russia, and Japan
The assement that the diversificatication in foreign affairs beyond "the four" has been established turns up thereby.
Considering that president Moon has been stressing on breaking from the four-centric foreign policy, his recent state visit to Germany as well as the summit meetings at G20 are widely accepted as the start signal of the government's diversification policy in foreign affairs.
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