Reverse tendency with test covering international leader (9)
I believe the answer is:
editorial
'leader' is the definition.
(type of newspaper article)
'reverse tendency with test covering international' is the wordplay.
'reverse' says the letters should be written in reverse.
'tendency' becomes 'tide' (I've seen this in another clue).
'with test' becomes 'oral' (oral is a type of examination. I am not sure about the 'with' bit.).
'covering' means one lot of letters goes inside another.
'international' becomes 'i' (abbreviation eg in IMF).
'tide' back-to-front is 'edit'.
'oral' placed around 'i' is 'orial'.
'edit'+'orial'='EDITORIAL'
Can you help me to learn more?
(Other definitions for editorial that I've seen before include "Article giving a newspaper's opinion" , "Newspaper item" , "Statement of a newspaper's opinion" , "Article that states a newspaper's opinion" , "(Paper's) leader" .)