1: To initiate into communist units, they carry the vital gas. (3, 5, 5)
2: Tutus can serve to conceal Donatello, Leonardo, Michelangelo, and Raphael, say (7)
3: Something lacking in brief season (9)
4: I got spoilt when wed (7)
5: The control is over that way (7)
6: Its strange to go back to a novice for a wall decoration (5)
7: With diverse amendments? (7)
10: Gradually reduce European Community requisitions for playback devices (4,9)
14: Central Slovak airport damaged 16-down (9)
16: Our visa, perhaps for divers (7)
17: Moscow politician revolting in style (7)
18: Ace swallows pastry tart (7)
19: Enjoy a mud pie and trade it freely (3,4)
21: Principle unaffected by revolution (5)