like: quan hệ ngoại giao → →
to not have diplomatic relations with ☊ 
không có quan hệ ngoại giao với ☊ Britain threatened to break off diplomatic relations. ☊ break sth off ☊
Formal diplomatic relations between the two countries were re-established in December. ☊ formal ☊
diplomatic/international/foreign relations ☊ relation ☊