UPDATE 5-Iran, U.N. nuclear agency to resume talks in Dec

* New Iran-IAEA meeting first since August * U.S. said Iran fired at its drone; escalation risk clear * EU, US urge Iran to resolve "outstanding issues" VIENNA, Nov 9 (Reuters) - Iran will return to talks with theU.N. nuclear agency next month, both sides said on Friday, thelatest push to seek a peaceful end to a dispute that has raisedfears of a new Middle East war. The news came days after U.S ...