Emphasise the Arab cities are different all round (9)
I believe the answer is:
italicise
'emphasise' is the definition.
('emphasize'->'italicize' is in my internal thesaurus and 'ize'->'ise')
'arab cities are different all round' is the wordplay.
'arab' becomes 'ali' (I can't justify this - if you can you should give a lot more credence to this answer).
'are different' indicates anagramming the letters (letters placed in a different order).
'all round' is an insertion indicator.
'cities' with letters rearranged gives 'itcise'.
'ali' going into 'itcise' is 'ITALICISE'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for italicise that I've seen before include "Emphatically" , "Convert to sloping type" , "change appearance of character" , "In email, make a big deal" , "Print in sloping letters" .)