Alliance runs into trouble with gangster (11)
I believe the answer is:
brotherhood
'alliance' is the definition.
(thesaurus)
'runs into trouble with gangster' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'into' means one lot of letters goes inside another.
'trouble with' becomes 'bother' ('bother' can be a synonym of 'trouble'. I am not sure about the 'with' bit.**).
'gangster' becomes 'hood' (I've seen this before).
'r' inserted into 'bother' is 'brother'.
'brother'+'hood'='BROTHERHOOD'
Can you help me to learn more?
(Other definitions for brotherhood that I've seen before include "Fraternity" , "Community" , "union" , "association" , "Feeling of close kinship" .)