外交關係

foreign relations / diplomatic relations

outside / in addition / foreign / external

diplomacy / diplomatic / foreign affairs / CL:個|个[ge4]

to hand over / to deliver / to pay (money) / to turn over / to make friends / to intersect (lines) / variant of 跤[jiao1]

mountain pass / to close; to shut; to turn off / to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc) / to concern; to involve

relation / relationship / to concern / to affect / to have to do with / guanxi / CL:個|个[ge4]

to connect / to relate to / to tie up / to bind / to be (literary)

Council on Foreign Relations (US policy think tank)

formally establish diplomatic relations