Require or necessitate (6)
I believe the answer is:
entail
I believe this is a double definition.
'require' is the first definition.
(I've seen this in another clue)
'necessitate' is the second definition.
(I know that entail is a more specific form of the action necessitate)
(Other definitions for entail that I've seen before include "Inevitably result in" , "Have as a logical consequence" , "Bring on, involve" , "Inalienable estate" , "Late in (anag.)" .)