Erwin R TiongsonErwin R. Tiongson is a professor at Georgetown University's Walsh School of Foreign Service. He teaches economics and writes about Philippine history. His essays have appeared in the Smithsonian's Air and Space Magazine, the New York Times, Positivel Filipino, Slate, the Washington Post, Washingtonian and White House History Quarterly . He is cofounder of the Philippines on the Potomac (POPDC) Project. Read More Read Less