- Three years ago today, Donald Trump was sworn into office.

- President Trump, he rarely sleeps and as a consequence,

his aides don't get much rest either.

- You hear of aides sort of gaming,

they're gonna come in and they're doing a policy briefing

and they have charts and pictures

and ways to engage the President.

- [News Reporter 1] The officials describe futile attempts

to keep his attention by confining some briefing points

to two or three sentences and repeating his name and title

as frequently as possible.

- There's a quote from a US Official,

"It's like feeding a baby his medicine

"in yogurt or applesauce."

- Sources tell CNN that Mr. Trump routinely complains

about these high profile gatherings

and questions why he has to go.

- [News Reporter 2] Complaining that during past summits,

too much time has been spent discussing the oceans

and the environment and not enough time has been devoted

to letting him brag about his achievements.

- [News Reporter 3] Senior officials cancel plans

and race to the White House to prevent the President

from enacting his latest "wacky or destructive idea."

- [News Reporter 4] During on hurricane briefing

at the White House, Trump said,

"I got it, I got it, why don't we nuke them?"

- [News Reporter 5] He also talked

about fortifying a border wall

with a water filled trench stocked

with snakes or alligators,

and he wanted the wall electrified

with spikes on top that could pierce human flesh.

- President Trump has reportedly on multiple occasions

expressed interest in buying Greenland

from the Danish government.

- Trump remarked, "Why is Seoul so close

"to the North Korean border?

Referring to the inhabitants of Seoul,

Trump said, "They have to move."

The officials in the Oval Office weren't sure

if Trump was joking.

Trump repeated, "They have to move."

- [News Reporter 5] Once on the grounds

of Washington's home, Trump told the people around him

if he was smart, he would've put his name on it.

You've got to put your name on stuff

or no one remembers you.

- [News Reporter 7] Mattis found the president to be

of limited cognitive ability.

- [News Reporters 8] He stumbles, slurs, gets confused,

is easily irritated

and has trouble synthesizing information.

- Trump wanted tanks

for his July fourth Salute to America celebration

and he will get tanks.

- [News Reporter 9] White House officials are worried

there won't be a big enough crowd

to keep the President happy.

- [News Reporter 10] Several senior officials

say televised briefings stopped

because of worry President Trump would get angry

if he saw something he didn't like.

- The President lashed out at the military brass

saying quote, "You're a bunch of dopes and babies."

- [News Reporter 11] The President even made fun

of the Directors looks, calling him Dumbo

because of his ears.

- [News Reporter 12] President Trump refers to him

as Mr. Rogers.

- [News Reporter 13] Trump also made fun

of US allies South Korea, Japan and the European Union,

mimicking Japanese and Korean accents.

- [News Reporter 14] Democrats accuse President Trump

of having a temper tantrum,

prompting a line up of his top aides to vouch for him.

- Kelly Ann, what was my temperament yesterday?

- Very calm, no temper tantrum.

- One senior national security official told Jake Tapper,

"Everyone at this point ignores what the president says

"and just does their job."

- A republican source who was in the room,

"He is not in control of himself,

"it is all yelling and screaming."