Nick Vivarelli International CorrespondentAmazon Studios has dropped the international trailer for Ashgar Farhadi’s “A Hero,” which is Iran’s candidate to represent the country at the upcoming Academy Awards in the Best International Feature Film category.The film, which launched positively in July from the Cannes Film Festival where it tied for the Grand Prix, the fest’s runner-up prize – and subsequently went to both Toronto and Telluride – will be released in U.S.