Mexico finds no trace of escaped drug lordMEXICO CITY — The capture of drug lord Joaquin Guzman was the crowning achievement of President Enrique Pena Nieto’s government in its war against drug cartels, a beacon of success amid domestic woes. That makes the bold escape by “El Chapo” from a maximum-security prison all the more devastating.A widespread manhunt that included highway checkpoints, stepped up border security and closure of an international airport failed to turn up any trace of Guzman today, more than 24 hours after he got away.Widely considered the world’s richest and most powerful drug trafficker before his capture last year, Guzman slipped down a shaft from his prison cell’s shower area late Saturday and disappeared into a sophisticated mile-long tunnel with ventilation, lighting and a motorcycle used to move dirt.The escape undermined Mexico’s assertion it can deal with top drug lords at home and doesn’t need to extradite them to the U.S.

Iran talks hit final stage but deal remains elusive VIENNA — Disputes over attempts to probe Tehran’s alleged work on nuclear weapons unexpectedly persisted at Iran nuclear talks today, diplomats said, threatening plans to wrap up a deal by midnight — the latest in a series of deadlines for the negotiations.The diplomats said at least two other issues still needed final agreement — Iran’s demand for a lifting of a U.N. arms embargo and its insistence that any U.N. Security Council Resolution approving the nuclear deal be written in a way that stops describing Iran’s nuclear activities as illegal.With a temporary deal set to expire at 6 p.m., diplomats said they hoped to complete and announce a final agreement before day’s end. But they warned there was no guarantee, and some said the talks could stretch into Tuesday despite there being little appetite for what would be a fourth extension of the interim agreement since the current round began on June 27.