SoftBank and Naver helped bridge geopolitical relations with a joint venture to own the operator of the messaging app Line, but now the partnership is fraying. Japan, South Korea, Line Corp, Naver.com, SOFTBANK Corporation, International Relations, Mobile Applications, Instant Messaging SoftBank and Naver helped bridge geopolitical relations with a joint venture to own the operator of the messaging app Line, but now the partnership is fraying. NYT > Business