Elderly women in vehicle creating decades of tension (4,3)
I believe the answer is:
cold war
'decades of tension' is the definition.
'cold war' can be an answer for 'tension' (the cold war was a period of geopolitical tension). I'm unsure of the 'decades of' bit.
'elderly women in vehicle' is the wordplay.
'elderly' becomes 'old' (similar in meaning).
'women' becomes 'w' (standard abbreviation).
'in' indicates putting letters inside.
'vehicle' becomes 'car' (car is a kind of vehicle).
'old'+'w'='oldw'
'oldw' placed within 'car' is 'COLD WAR'.
'creating' acts as a link.
Can you help me to learn more?
(Other definitions for cold war that I've seen before include "State of tension and hostility" , "Low card (anag.)" , "State of tension after 1945" , "Intense hostility between nations without actually fighting" , "(Freezing?) state of hostility between nations" .)