Trump holds course with extreme latitude (8)
I believe the answer is:
broadest
'trump holds course with extreme latitude' is the definition.
I can't tell whether this definition defines the answer.
'trump holds course with' is the wordplay.
'trump' becomes 'best' (synonyms).
'holds' indicates putting letters inside.
'course with' becomes 'road' (I've seen this in another clue. I am not sure about the 'with' bit.).
'best' enclosing 'road' is 'BROADEST'.
Can you help me to learn more?
(Other definitions for broadest that I've seen before include "Most general, extensive" , "Most unspecific" , "Widest" .)