Northern Virginia from the older National Airport (a focus city for American Airlines) are restricted for distance, frequency, and flight paths due to the proximity to federal facilities, Dulles is the region's second busiest airport in both passenger loadings and aircraft movements, and the sixteenth-busiest airport in the United States by takeoffs and landings in 2007. Dulles is the region's primary international gateway, serves as a hub for United Airlines, and has recently improved its low-cost carrier offerings with the addition of multiple flights by Southwest and JetBlue. Commuters are served by the Washington Metro subway and the Virginia Railway Express, a
John Foster Dulles whose foreign policy Dulles criticized. Dulles instead advocated a policy of "liberation". When Dwight D. Eisenhower became U.S. President in January 1953, Dulles was appointed and confirmed as his Secretary of State. As Secretary of State, Dulles still carried out the "containment" policy of neutralizing the Taiwan Strait during the Korean War, which had been established by President Truman in the Treaty of Peace with Japan of 1951. Dulles also supervised the completion of the Japanese Peace Treaty, in which full independence was restored to Japan under United States terms. As Secretary of State, Dulles concentrated on building up the