Determination to settle (7)
I believe the answer is:
resolve
I believe this is a double definition.
'determination' is the first definition.
(I've seen this before)
'settle' is the second definition.
(I know that settle can be written as resolve)
'to' is the link.
(Other definitions for resolve that I've seen before include "Find the solution (to)" , "Clear up: courage" , "Firmness of purpose" , "12 [STIFF UPPER LIP]" , "Settle (a matter)" .)