(This content was produced in Russia, where the law restricts coverage of Russian military operations in Ukraine) MOSCOW (Reuters) – Russia has banned investors from so-called unfriendly countries from selling shares in key energy projects and banks until the end of the year, stepping up pressure in the sanctions stand-off with the West. Western countries and allies, including Japan, have piled financial restrictions on Russia since it sent troops into Ukraine in late February. Moscow retaliated with obstacles for Western businesses and their allies leaving Russia, and in some cases seized the…