### Clue: American ready to separate opposing sides in port (9)
### Answer: ARCHANGEL 
 ### Explanation: Definition: port
 A(abbrev. for "American") + [ CHANGE(money of lower denomination;ready) **contained in**(to separate) R,L(abbrevs. respectively, for "right" and "left";opposing sides) ].
Defn: … in NW Russia.