Beck, Robert J. <br/><br/>
The Grenada invasion, international law and the Scoon invitation : a 30-year retrospective 

 -  2013 
<br/><br/> Concludes that although Operation Urgent Fury was genuinely supported by GG Sir Paul Scoon, he did not initiate the informal, oral invitation or author his formal written one; and that the GG's invitation did not legally justify the operation. 
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