Holland's leader and Arab leader read out cordial greeting (9)
I believe the answer is:
handshake
'cordial greeting' is the definition.
(I've seen this in another clue)
'holland's leader and arab leader read out' is the wordplay.
'holland's leader' becomes 'h' (I can't explain this - if you can you should give a lot more credence to this answer).
'arab leader' becomes 'sheik' (I've seen this in another clue).
'read out' shows a homophone (sound like).
'sheik' sounds like 'shake'.
'h'+'and'+'shake'='HANDSHAKE'
Can you help me to learn more?
(Other definitions for handshake that I've seen before include "Conventional greeting of manual kind" , "acknowledgment" , "Gesture of greeting or of agreeing a deal" , "Form of greeting" , "introductory offer?" .)