Control force (5)
I believe the answer is:
power
I believe this clue is a double definition.
'control' is the first definition.
(thesaurus)
'force' is the second definition.
('power' can be a synonym of 'force')
(Other definitions for power that I've seen before include "Strength, force" , "Supply with energy" , "Strength - capacity" , "Electricity or strength" , "Political control; might" .)