By Jessica Dye, Joseph Ax and Jim Finkle NEW YORK/BOSTON (Reuters) - In one of the biggest ever bank heists, a global cyber crime ring stole $45 million from two Middle Eastern banks by hacking into credit card processing firms and withdrawing money from ATMs in 27 countries, U.S. prosecutors said on Thursday. The U.S. Justice Department accused eight men of allegedly forming the New York-based cell of the organization, and said seven of them have been arrested. The eighth, allegedly a leader of the cell, was reported to have been murdered in the Dominican Republic on April 27. ...