MOSCOW, Russia — A steady stream of voters arrived at a polling station in the heart of Russia’s capital early on this crisp, sunny Friday to cast their votes in a three-day presidential election.

Witness videos appear to show the chaos inside Moscow’s Crocus City Hall after a reported attack. Gunshots appear to be heard in the videos, as well as armed men with rifles, as concertgoers ...

During the Cold War, Adolf Tolkachev became the CIA’s most important spy inside Moscow, providing intelligence that rewrote U.S. military strategy. His work was so dangerous that he burned his ...