The most common and most likely answer to this crossword clue is the 6 plus 8 letter word CAREER DIPLOMAT
I've seen this crossword clue in The Times
C
A
R
E
E
R
D
I
P
L
O
M
A
T
More clues leading to the result CAREER DIPLOMAT
Buddy explains!

The straight part
We know that "official" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case official = career diplomat.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.