Talk of the Nation

Rick Santorum, Newt Gingrich and Rick Perry all hope to derail Mitt Romney's front-runner status in the South Carolina primary. Former South Carolina Rep. Bob Inglis joins NPR's Ken Rudin for a preview of the Palmetto State primary.

In his book, Justice and the Enemy, British journalist William Shawcross says the Nuremberg trials of Nazi leaders after World War II created a template for the trial of future war crimes. He considers the case of Khalid Sheikh Mohammed, the alleged mastermind of the 9/11 attacks, who's being held in Guantanamo prison and will be tried in a military commission.

In December, Ethiopian troops seized the city of Beledweyne, in Western Somalia, from al-Qaida-linked terrorist group al-Shabab, in an attempt to weaken their influence in the country. The decision to increase international presence in Somalia has raised serious questions among analysts about the effect armed intervention will have on the region.

Sites like PolitiFact and Factcheck.org are designed to verify political claims and hold politicians accountable. But critics say fact-checking entities are themselves biased. The Weekly Standard's Mark Hemingway and Glenn Kessler of the Washington Post discuss fact-checking in American politics.

NPR's Neal Conan reads from listener comments on previous show topics, including the moment that changed your life, differences between identical twins, and a proposal for a new calendar.