2: Support sign for subordinates (11)
3: First popular promise - extreme appeal (9)
4: Eskimo intuitions are half-developed (5)
5: Ikhnaton's successor or teacher (5)
6: 23% of Scandinavians backing leaders (3)
7: Chalet I remodeled in conformance with professional standards (7)
9: Narcs study crackhead's ultimate road to nowhere (4,3)
12: Exchange concealed proprietary knowledge (5,6)
14: Resolute British detectives in action (7)
15: M.C. with overexcited serpent heads to exit right (9)
16: Mix up, in Social Security, passes (7)
18: Believes in harnessing hydrogen for sources of propulsion (7)
20: We hear he pillaged while he played. (5)
21: Some unpretentious language! (5)