Nothing further on Rome strangely enough (2,4)
I believe the answer is:
no more
'nothing further' is the definition.
(I've seen this before)
'on rome strangely enough' is the wordplay.
'strangely enough' is an anagram indicator.
'on'+'rome'='onrome'
'onrome' is an anagram of 'NO MORE'.
(Other definitions for no more that I've seen before include "Never again, that's the end of it" , "Never again, that's the lot" , "opposite of what Oliver wanted" , "Monroe (anag)" , "Like a dead parrot?" .)