The most common and most likely answer to this crossword clue is the 7 letter word ASSYRIA
I've seen this crossword clue in Financial Times
A
S
S
Y
R
I
A
More clues leading to the result ASSYRIA
- Light vessel reversed by a kingdom once
- Fool without a care sent up expansionist kingdom
- A light ship heading back for old kingdom
- Empire once so small and insubstantial to overturn
- A small modern-day country; a vast ancient kingdom
- Old empire’s fresh uprising under ignoramus
- A ship on unknown stretch of water finds ancient kingdom
- Old country song about ship? Unknown
- Idiot and nonchalant revolutionary in old kingdom
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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.