What could be too unfeeling as a worldwide organisation (6,2,7)
I believe the answer is:
league of nations
'worldwide organisation' is the definition.
(organisation replaced by the UN)
'what could be too unfeeling as a' is the wordplay.
'what could be' indicates an anagram.
'too'+'unfeeling'+'as'+'a'='toounfeelingasa'
'toounfeelingasa' with letters rearranged gives 'LEAGUE OF NATIONS'.
(Other definitions for league of nations that I've seen before include "Pacific group" , "international organisation" , "Old pacifists" .)