Washington Dulles International Airport Rosslyn Metro station in Arlington and terminates at the L'Enfant Plaza Metro station in Southwest DC. Rosslyn can be accessed by the Orange, Blue, and Silver lines, while L'Enfant Plaza is also served by the Yellow and Green lines. Washington Flyer's Silver Line Express bus service operates roughly every 15–20 minutes between the airport and the Wiehle – Reston East Metro station. This service will be permanently discontinued when Phase II of the Silver Line opens in 2020. Passengers connecting to the Shenandoah Valley can use the Shenandoah Valley Commuter Bus, which connects to the Vienna and Rosslyn Metro stations.
Allen Dulles New York firm where his brother, John Foster Dulles, was a partner. He became a director of the Council on Foreign Relations in 1927, the first new director since the Council's founding in 1921. He was the Council's secretary from 1933 to 1944. During the late 1920s and early 1930s, he served as legal adviser to the delegations on arms limitation at the League of Nations. There he had the opportunity to meet with Adolf Hitler, Benito Mussolini, Soviet Foreign Minister Maxim Litvinov, and the leaders of Britain and France. In 1935 Dulles returned from a business trip to Germany