1: War or piecemeal missile (5)
2: Man, what an avant-garde US artist! (3)
3: Play with exaggerated emotions made moral play (9)
4: Proficient in arithmetic, starting with short division (5)
9: Flower festival is pointless (5)
10: Newsman Bradley accepts men, correct? (5)
11: Child is to depart, finally (3)
13: Neither's partner participated in an orchestra (3)