Japan lodged a diplomatic protest and strongly condemned the North's provocation.
日本提出外交抗议,并强烈谴责朝鲜的挑衅行为。
英语百科
Diplomatic correspondence
(重定向自Diplomatic protest)
Diplomatic correspondence is correspondence between one state and another, usually – though not exclusively – of a formal character. It follows several widely observed customs and style in composition, substance, presentation, and delivery and can generally be categorized into letters and notes.