MOSCOW -- For three straight days last weekend, the employees of the Novaya Buryatia newspaper in southern Siberia used scissors to remove an article from 50,000 copies of the weekly before it could be distributed. The same article, which had been posted a few days earlier on the paper's website, was pulled down. (It can be seen in an archived file here.) As a result, an article that was intended to clear up some mysteries involving alleged Russian military participation in the fighting in eastern Ukraine has itself become the center of a mystery: Is this a case of Soviet-style...