Science Advisor to the President War II by President Franklin Delano Roosevelt. Vannevar Bush chaired this office through Roosevelt's death in 1945, and continued under Roosevelt's successor Harry S. Truman until 1951. After the war, President Harry S. Truman replaced the OSRD with the Science Advisory Committee in 1951. The office was moved to the White House on November 21, 1957, by President Dwight D. Eisenhower to provide advice and recommendation in response to the Space Race started by the USSR's launch of the first artificial Earth satellite, Sputnik 1. President Richard M. Nixon eliminated the PSAC in 1973, rather than appointing a replacement for
President of Sri Lanka Presidential election. The Constitution sets the following qualifications for holding the presidency: The President is elected to office in a presidential election held nationwide for a term of maximum of five years. An elected president can serve a maximum of two terms, with each term taking effect from the date of taking a public oath of the office for the elected term. Succession to or vacancies in the office of President may arise under several possible circumstances: death or incapacity, resignation and removal from office. In the case when the President is unable to perform his/her duties, his/her powers are