Trouble in Yerevan started for the odious Russian-Armenian oligarch after his lawsuit against France over his $120 million villa on the Cote d'Azur. Samvel Karapetyan, the head of the Tashir group of companies arrested in Armenia, initiated arbitration proceedings against France at the International Center for Settlement of Investment Disputes in early June, "Kommersant" pointed out. The publication speculated that the lawsuit may concern the billionaire's seized villa on the Cote d'Azur worth €120 million.…