Summary: North Korea showed visiting American nuclear scientist Siegfried Hecker a vast new facility it secretly built to enrich uranium, confronting the Obama administration with the prospect that the country is preparing to expand its nuclear arsenal or build a far more powerful type of atomic bomb. … One-year retrospective: One year ago today, on November 22, 2009, Aubrey Immelman reported that leaked British government documents call into question ex-Prime Minister Tony Blair’s public statements on the buildup to the Iraq war and show plans for the U.S.-led 2003 invasion were being made more than a year earlier, in February 2002, shortly after the attacks of 9/11.