The dispute between the United States and the European Union over alleged subsidies to Boeing and Airbus for the development and construction of new commercial aircraft has been called the "third rail of U.S.-European trade relations." In the fall of 2004, the United States filed a case against the EU in the World Trade Organization; the EU responded with its own charges against the United States. In January, both sides agreed to attempt to settle the issues through diplomatic negotiations, slated to run through mid-April. A panel of experts will discuss the economic, political and legal issues surrounding the dispute.