North Korea has shown the world its missiles and military might; the rest of the country remains veiled in secrecy; exclusive and unprecedented access; Will Ripley returns to North Korea for a record twelfth trip.

Donald Trump first used twitter to promote himself and his projects; candidate Trump used twitter to rally his supporters; President Trump still tweets, but it may be possible that twitter will become his Achilles' heel.

Jake Tapper hosts live coverage on the day's developments in the Special Counsel investigation, led by former FBI Director Robert Mueller. The first criminal charges are filed in the investigation into Russian influence in the 2016 Election. New evidence shows the Special Council zeroing in on possible collusion.