### Clue: Southern water where friendly bombs were wanted (6)
### Answer: SLOUGH 
 ### Explanation: Definition: where friendly bombs were wanted
  S(abbrev. for $$s$$outhern) + LOUGH(Irish word for lake,body of water). 
Answer: The name of the protest poem by English poet, John Betjeman, which starts "Come, friendly bombs, and fall on Slough!".  The rest may be found here.