By Ron Bousso LONDON (Reuters) – Shell will exit all its Russian operations, including a major liquefied natural gas plant, it said on Monday, becoming the latest major Western energy company to quit the oil-rich country following Moscow’s invasion of Ukraine. The decision comes a day after rival BP abandoned its stake in Russian oil giant Rosneft in a move that could cost the British company over $25 billion. Norway’s Equinor also plans to exit Russia. Shell said in a statement it will quit the flagship Sakhalin 2 LNG plant in which it holds a 27.5% stake, and which is 50% owned and operated …