United States Oval Office Address

An Oval Office address is a type of speech made by the president of the United States, usually but not always in the Oval Office at the White House. It is considered among the most solemn settings for an address made by a leader, and is most often delivered to announce a major new policy initiative, on the occasion of a leader's departure from office, or during times of national emergency (natural disaster, war, etc.).

Source: Wikipedia — United States Oval Office Address (CC BY-SA 4.0)