The first week of the new year holds a lot of potential change. The widely-hyped Iowa caucuses will be held Tuesday. The same day Palestinian and Israeli negotiators will meet in Jordan to revive peace talks. And four Nigerian states declared a state of emergency. Joining the program is Michael Munger, Duke University professor of economics and political science.  Also on the show is Anna Sale, political reporter for It's A Free Country, WNYC's interactive politics site.