The most common and most likely answer to this crossword clue is the 6 letter word UNESCO
I've seen this crossword clue in The Guardian
U
N
E
S
C
O
More clues leading to the result UNESCO
- In France, a key old international agency
- International agency wanting some nun escorts
- In June, Scotland is a cultural hub
- Some run escort agency spanning globe
- Scientific body in fluid ounces
- International organisation initially comes up short, needing enhanced overseas supply
- In Paris a supermarket removes Tango for major international operation
- Somehow no clues on money spent in world body
- World Heritage Site group featured in iTunes collection
- An international organization in June’s convention
Buddy explains!
The straight part
We know that "major international operation/(6)" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case major international operation/(6) = unesco.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.