TALLINN, Estonia, Feb. 10 (UPI) -- Moscow should act quickly and decisively to limit Chinese immigration into the Russian Far East lest the growing number of Chinese there "polarize" the country, weaken Russian national identity, and give Beijing a lever over Russia in the future, according to a Sakhalin native who works for an international consulting group. In an article posted on the Kreml.org website this week, Yevgeniy Kolesnikov says that that the number of Chinese residents in the Russian Far East has jumped from 2,000 in 1989 to just under a million now, only one-quarter of whom are officially...