Sylvester Stallone Explains Why &#x27;The Expendables 3&#x27; Is Rated PG-13 -- The creator of this franchise arrives in Cannes with his entire cast to discuss the sequel&#x27;s more serious tone and on-set competition. -- http://www.movieweb.com/news/sylvester-stallone-explains-why-the-expendables-3-is-rated-pg-13