White House condemns killing of Russia's Nemtsov

WASHINGTON (Reuters) - U.S. President Barack Obama has condemned the "brutal murder" of Russian opposition politician Boris Nemtsov, the White House National Security Council said on Friday on Twitter. The White House called on the Russian government to conduct a "prompt, impartial and transparent investigation" and to "ensure those responsible are brought to justice." (Reporting by Roberta Rampton; Editing by Doina Chiacu)