2: Smart attempt to encircle a city (7)
5: Oxygen is pretty amusing. (3)
6: Finger in pot, stirring (5)
8: Attacked with words to violate one's hearing (9)
10: Old Testament figure appears before New Testament incident (5)
11: Sister gets nothing, we hear (3)
12: Tavern drink for the auditor, one with access to confidential information (7)