外がい交こう上じょう

noun which may take the genitive case particle 'no'

diplomatic; diplomatically

Used as a no-adjective or adverb to describe matters related to diplomacy or international relations.

• その問もん題だいは外がい交こう上じょう、非ひ常じょうにデリケートだ。

  The issue is very delicate diplomatically.

• 外がい交こう上じょうの理り由ゆうで訪ほう問もんが延えん期きされた。

  The visit was postponed for diplomatic reasons.