Diane M. Ring is a nationally recognized expert in tax law, and has served as a consultant to the United Nations, and as vice chair of the American Bar Association Tax Section Committee on Teaching Tax. She has written extensively in international and business taxation, the sharing economy and ethical issues in taxation. Her recent work addresses issues including information exchange, tax leaks, international tax relations, sharing economy and human equity transactions, and ethics in international tax. Professor Ring was a consultant for the United Nation’s 2014 project on tax base protection for developing countries, and the U.N.'s 2013 project on treaty administration for developing countries. She was the U.S. National Reporter for the 2012 IFA Conference on the Debt Equity Conundrum, and the U.S. National Reporter for the 2004 IFA Conference on Double Nontaxation. Professor Ring is also co-author of three case books in taxation– one on corporate taxation, one on international taxation, and one on ethical problems in federal tax practice. Before entering academia, Professor Ring practiced at the firm of Caplin & Drysdale in Washington, D.C., specializing in the area of international tax and the taxation of financial instruments. Professor Ring also clerked for Judge Jon O. Newman of the Second Circuit Court of Appeals.