From Longman Dictionary of Contemporary Englishdiplomatic corpsdiploˈmatic ˌcorps noun [uncountable] PGOall the diplomats working in a particular country
Examples from the Corpus
diplomatic corps• In Chongqing, Joe sought out contacts who could introduce him to the upper levels of the government and diplomatic corps.• For all of its own bureaucratic strictures, the diplomatic corps had the sympathetic ears that Liang was looking for. 