Ham has delved deep into the diplomatic correspondence, and indicts just about everyone involved.

While telegrams have been obsolete in normal life since texts and emails took over, their place in diplomatic correspondence continues, albeit in electronic form.

She was the subject of much diplomatic correspondence.

Nothing in the diplomatic correspondence of the time throws any light whatever on the point.

Although he had no bilingual texts, he was able to give a partial interpretation to the two letters because of the formulaic nature of the diplomatic correspondence of the period.