Run in a northern strategy from southern Region? (9)
I believe the answer is:
antarctic
'from southern region?' is the definition.
(from Antarctica)
'run in a northern strategy' is the wordplay.
'run' becomes 'r' (cricket abbreviation).
'in' indicates putting letters inside.
'northern' becomes 'n' (abbreviation e.g. N. Ireland).
'strategy' becomes 'tactic'.
'a'+'n'+'tactic'='antactic'
'r' going into 'antactic' is 'ANTARCTIC'.
(Other definitions for antarctic that I've seen before include "Relating to southern polar region" , "Continent?" , "Area around the South Pole" , "Of South Polar regions" , "Region around the south pole" .)