Global peacekeepers against entering Israel maybe (9)
I believe the answer is:
universal
'global' is the definition.
(thesaurus)
'peacekeepers against entering israel maybe' is the wordplay.
'peacekeepers' becomes 'un'.
'against' becomes 'v' (abbreviation for 'versus'**).
'entering' is an insertion indicator.
'maybe' is an anagram indicator.
'israel' is an anagram of 'iersal'.
'v' going inside 'iersal' is 'iversal'.
'un'+'iversal'='UNIVERSAL'
(Other definitions for universal that I've seen before include "Applying throughout the world" , "wide-ranging and comprehensive" , "Common" , "Belonging to the whole world" , "Worldwide or cosmic" .)