Obama defends decision to commute Chelsea Manning's sentence

President Barack Obama firmly defended his decision to cut nearly three decades off convicted leaker Chelsea Manning's prison term Wednesday, arguing in his final White House news conference that the former Army intelligence analyst had served a "tough prison sentence" already.Taking questions on many topics two days before his presidency ends, Obama also warned that the "moment may be passing" for a two-state solution to the Israeli-Palestinian conflict, pushing back on criticism over his recen