The most common and most likely answer to this crossword clue is the 6 letter word KUWAIT
I've seen this crossword clue in The Sunday Telegraph
K
U
W
A
I
T
More clues leading to the result KUWAIT
- Our country rejected, hold on for another
- Line delay in phone call to foreign country
- Nation of Britain in recession, hang on!
- Be delayed after setback of one country or another
- Britain standing to remain a monarchy
- Heard line of people and what they do in country
- Hold-up after this country initially upset another
- Turn of Britain and NI to stand by oil exporter
- Country or kingdom raised women on island
- Country to stand by King and upper class leadership
Buddy explains!

The straight part
We know that "Nation" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nation = kuwait.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.