Riordan Roett is Sarita and Don Johnston Professor at the Paul H. Nitze School of Advanced International Studies at Johns Hopkins University, where he directs the Western Hemisphere Studies and Latin American Studies Programs. He is the author or editor of twenty-two books, including China's Expansion into the Western Hemisphere (Brookings, 2008) and Post-Stabilization Politics in Latin America (Brookings, 2003). His textbook Brazil: Politics in a Patrimonial Society is now in its fifth edition.