WASHINGTON (AP) - Law enforcement officials from five countries said Wednesday they are struggling to deal with the street gang called MS-13 that is plaguing communities from the United States to Central America. A meeting at FBI headquarters launched an unprecedented effort to make inroads against what officials called "a culture of violence." "We're trying to build networks of communication for sharing historical and current data on MS-13 members," said Deborah Strebel Pierce, deputy assistant director for the FBI criminal investigative division. Shorthand for Mara Salvatrucha, which loosely translates to guerrilla gang, MS-13 is a Latin American gang founded in...