UPDATE 1-Kazakhstan threatens to alter Western oil deals

-- the world's biggest oil discovery in decades -- is run by Exxon Mobil Corp (XOM.N), ConocoPhillips (COP.N), Royal Dutch Shell Plc (RDSa. L), Eni (ENI.MI), Total (TOTF.PA), KazMunaiGas [KMG.UL] and Japan's Inpex Holdings Inc (1605. T). Karachaganak, at...