(17d) No comeback is available in American spots for ultra-nationalists. (8)
_ _ _ N _ S _ _.
(22d) I am involved in international treaty on rare animals, but not in their wild
habitats. (6) _ I _ _ _ S.
(23d) He did something very wrong by turning it up. (6) _ E _ _ _ S.
(28a) When growing, Green put everything into the sun and heir. (8)
_ C _ L _ _ _ _.
(29a) Wood found in steamer that could be eaten by crew and passengers. (6)
_ _ E _ K _.