Hawaii is set to become the first state in the US to test an "attack- warning" system in the event of a North Korean nuclear missile strike.

It hasn't been easy being Sean Spicer for the past six months. Called on to defend the indefensible from day one -- remember those outlandish, inaccurate claims about the inauguration crowd numbers? -- he has watched his credibility be reduced to rubble.

The US government will bar American citizens from traveling to North Korea because of "mounting concerns over the serious risk of arrest and long-term detention," the State Department said. CNN's Brian Todd reports.

You have to admit: Prince George is one cute 4-year-old.

Special counsel Robert Mueller has asked the White House to preserve all documents relating to the June 2016 meeting at Trump Tower that Donald Trump Jr., Jared Kushner and Paul Manafort had with a Russian lawyer and others, according to a source who has seen the letter.

Sean Spicer said Friday night that President Donald Trump did not want him to resign as White House press secretary but "understood" that it was in the best interest of the administration.