The Pentagon must quickly complete its strategy for slashing security spending by hundreds of billions of dollars over the next decade to inform Washington's fast-paced talks on budget cuts, the military's top officer said today. "We've worked it very hard in terms of the overall strategy," Chairman of the Joint Chiefs of Staff Adm. Michael Mullen said. "We're pretty far along." But he cautioned the Defense Department is running out of time to complete the work. "Obviously we have a...