### Clue: Am I backing second rallying cry for union with Greece? (6)
### Answer: ENOSIS 
 ### Explanation: Definition: rallying cry for union with Greece
 **Reversal of**(… backing) [ IS(third person singular present tense of "be", whose first person equivalent is "am") + ONE(whose Roman numeral is "I" ] + S(abbrev. for "second" in time notation).
Defn: … among certain Cypriots and Greeks.