The state in which old police chief’s bearing left one (7)
I believe the answer is:
liberia
'the state' is the definition.
(Liberia is an example)
'old police chief's bearing left one' is the wordplay.
'old police chief' becomes 'beria' (I can't justify this - if you can you should give a lot more credence to this answer).
'bearing' says to put letters next to each other.
'left one' becomes 'li' (left abbreviation plus b).
'beria' put after 'li' is 'LIBERIA'.
'in which' acts as a link.
Can you help me to learn more?
(Other definitions for liberia that I've seen before include "Monrovia's country" , "West African country, capital Monrovia" , "Africa's oldest independent country" , "West African country founded for freed slaves" , "NW African Republic" .)