### Clue: No definite rules apply in these" – ex-Foreign Secretary at first argues referring to withdrawn appeal (4,5)
### Answer: GREY AREAS 
 ### Explanation: Definition: No definite rules apply in these
 GREY(Edward, former UK Foreign Secretary, 1905 – 1916) + **the 1st letter of**(at first) "argues " + RE(referring to;with reference to) + **reversal of**(withdrawn) SA(abbrev. for "sex appeal").