Funding part of UK -- that's upset another country (5)
I believe the answer is:
india
'another country' is the definition.
'India' can be an answer for 'country' (India is an example). I'm not sure about the 'another' bit.
'funding part of uk that's upset' is the wordplay.
'funding' becomes 'aid'.
'part of uk' becomes 'NI' (Northern Ireland).
'that's upset' says the letters should be written backwards.
'aid'+'ni'='aidni'
'aidni' backwards is 'INDIA'.
Can you help me to learn more?
(Other definitions for india that I've seen before include "Territory" , "Republic in south Asia" , "One preceding Juliet" , "Big country" , "A Passage to - (E.M. Forster)" .)