As a detective solving the mystery of the cryptic crossword clue ‘Diplomatic professional’, my first thought was to understand the clue and scrutinize every word for hidden clues or meanings. “Diplomatic” could refer to a person who is skilled in dealing with people tactfully, while “professional” might hint at someone who has a certain level of expertise in their field. The word ‘envoy‘ came to mind as it seemed to fit the bill perfectly. An envoy is a diplomatic representative of a government or an organization who is sent to negotiate, mediate, or represent the interests of their country or organization. This made it quite clear that ‘envoy‘ was the perfect solution for the crossword clue. My senses of logic and deduction led me to the right answer, and I felt content with my accomplishment in solving the case.