The most common and most likely answer to this crossword clue is the 12 letter word AUSTRALASIAN
I've seen this crossword clue in The Daily Telegraph
A
U
S
T
R
A
L
A
S
I
A
N
More clues leading to the result AUSTRALASIAN
- Antipodean, sad to say, taken in by native of Vienna?
- European cases, I’m sorry to say, coming from New Guinea, perhaps?
- Kiwi, for example, unfortunately trapped by European
- From Pacific region, regrettably captured by European
- From other side of the world, area is as natural as it could be
- Unfortunately adopted by European from a Pacific region
Buddy explains!

The straight part
We know that "from a Pacific region" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case from a pacific region = australasian.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.