By Sabrina Valle HOUSTON (Reuters) – Exxon Mobil Corp said on Monday that it left Russia completely after President Vladimir Putin expropriated its properties following seven months of discussions over an orderly transfer of its 30% stake in a major oil project. Exxon did not say if it received any compensation for the assets, which it had valued at more than $4 billion. An Exxon spokesperson declined to comment on whether it will proceed to contest the seizure through an international arbitration process, a possibility flagged in August. Its departure illustrates the clash between the West an…