Nation: A fraternity at the University of Oklahoma was quickly shut down yesterday after the Internet posting of a video featuring the frat boys on a bus singing a racist song. To the tune of “If You’re Happy and You …

The Nemtsov Affair: Russian police say a suspect in the murder of opposition politician Boris Nemtsov blew himself up as they were demanding his surrender. At least five suspects are now in custody, one of them reported to be a …