Rattling: A magnitude 5.3 magnitude earthquake detected in North Korea revealed that the Hermit Kingdom had carried out its fifth nuclear bomb test. North Korea claimed it has developed a bomb capable of being mounted on a missile, but it …

Poll-itics: In a flip-flop from the national trend, Texas Sen. Ted Cruz leads Donald Trump 24 percent to 19 percent in the Iowa Republican polls. Marco Rubio is running third at 17 percent. Chris Cillizza writes in The Washington Post …