Trump has been omnipresent on social media and television this year with his impromptu news conferences and speeches. But addresses to the nation often can be relatively sober affairs, as was Trump's June address describing the U.S. bombing of nuclear facilities in Iran.

The president was expected to devote the year-end speech to his accomplishments so far in his second term and look ahead to next year.

President Trump participates in the dignified transfer of the two Iowa National Guard members killed in Syria.

This weekend's edition of "Saturday Night Live" skewered U.S. President Trump's habit of holding impromptu press conferences on Air Force One.

As he arrived at the White House's Christmas reception, Trump paid tribute to those killed and injured in the three attacks.