dr. michael hogan. .. >> on sunday flint and hillary man leverett argue a change in policy toward the government of iran is necessary. that's at 9 a.m. eastern. at 3 p.m., williams rhodes explores the financial challenges facing europe and asia. watch these programs and more all weekend long on booktv. for a complete schedule, visit booktv.org. >> next, from politics & prose bookstore in washington, d.c., thane gustafson looks at how russia's unstable economic and political systems could impact the country's oil output with 12% of the world's oil supply coming from rush b shah, he also explores what this could mean for the global economy. this is a little under an hour. >> a pleasure to see you all here tonight. as we know, happinesses is a relative thing, and i began the day this morning in the dentist's chair having a crown put in, and here by tonight i'm at politics & prose. so i'm a very happy man having gone from one extreme to the other. so it's a special pleasure to welcome you all here tonight and, gosh, standing room only. so this is marvelous. well, i thought i would begin by telling y