article_snippet: The same thing happened with the murder of investigative journalist and vocal Vladimir Putin critic Anna Politkovskaya in 2006.
article_snippet: Although Kremlin involvement in her killing was never proved, the number of brave, outspoken investigative journalists in Russia dropped to only a handful after her death.
article_snippet: No investigation conducted solely by the Russian government would be credible under the circumstances, because No investigation conducted solely by the Russian government cannot impartially examine the possible complicity of Vladimir Putin or the Russian secret service in this act.
article_snippet: There are statutory instruments in place for this kind of investigation, using the OSCE, the Council of Europe, and the United Nations.
highlights_snippet: Russian government has denied any involvement in killing .