DUBLIN -- A 1997 letter from the Vatican warned Ireland's Catholic bishops not to report all suspected child-abuse cases to police - a disclosure that victims' groups described as "the smoking gun" needed to show that the church enforced a worldwide culture of covering up crimes by pedophile priests. The newly revealed letter, obtained by Irish broadcasters RTE and provided to The Associated Press, documents the Vatican's rejection of a 1996 Irish church initiative to begin helping police identify pedophile priests following Ireland's first wave of publicly disclosed lawsuits...