Turning Mossad's core agents - note about four likely to join up (11)
I believe the answer is:
associative
'four likely to join up' is the definition.
I can't tell whether this definition defines the answer.
'turning mossad's core agents note' is the wordplay.
'turning' says the letters should be written in reverse.
'core' means to look at the middle letters.
'agents' becomes 'CIA' (Central Intelligence Agency).
'note' becomes 'tive' (I am not sure about this - if you are sure you should believe this answer much more).
The middle of 'mossad' is 'ossa'.
'ossa' written backwards gives 'asso'.
'asso'+'cia'+'tive'='ASSOCIATIVE'
'about' is the link.
Can you help me to learn more?
(Another definition for associative that I've seen is " making connection".)