Crossword Puzzle Unfinished threat

Clue: Unfinished threat

Cold War threat (e.g. HBOMB with 5 letters)
Wind threat (SHEAR with 5 letters)
Earth threatener (METEOR with 6 letters)
"Odyssey" threats (SIRENS with 6 letters)
A veiled threat (with ''or'') (ELSE with 4 letters)
Unfinished Anthony Burgess work about a punctual primate? (ACLOCKWORKORANG with 15 letters)
Not threatened by the wind (ALEE with 4 letters)
Frighten with threats (COW with 3 letters)
African threat (e.g. EBOLA with 5 letters)
Veiled threat (ORELSE with 6 letters)