By Anna Hirtenstein, Shariq Khan and Jarrett Renshaw LONDON/NEW YORK, Nov 18 (Reuters) – U.S. oil major Exxon Mobil (XOM.N) has joined rival Chevron Corp (CVX.N) in considering options to buy parts of sanctioned Russian oil major Lukoil’s (LKOH.MM) international assets, sources familiar with the matter said. Exxon is considering options for Lukoil assets in … Read more