Mo Grimeh (L), a managing director who has worked at Lehman Brothers for ten years, walks out of their building and briefly speaks to journalists as a security guard watches in New York September 14, 2008. Talks faltered when Britain's Barclays Plc, which had appeared to be front-runner to take over Lehman -- excluding its toxic mortgage-related assets -- said it had pulled out of the bidding. [Agencies]