Cook aimed for news channels (5)
I believe the answer is:
media
'news channels' is the definition.
(I've seen this before)
'cook aimed' is the wordplay.
'cook' indicates an anagram.
'aimed' anagrammed gives 'MEDIA'.
'for' is the link.
(Other definitions for media that I've seen before include "Aimed (anag.)" , "region near Caspian Sea" , "the box etc" , "Mass communication organs" , "The 14, for example" .)