Author Anna Fifield's new book provides fresh details on the dictator-to-be's adolescent years growing up in the picturesque Swiss capital of Bern.
Relations between Washington and Pyongyang look far less promising than they did one year ago, with denuclearization negotiations stalled since the collapse of the Hanoi summit.
Kim Jong Nam was assassinated with a nerve agent in February 2017, reportedly after having met with his CIA contact in Malaysia.
The new book depicts the young Kim as an intelligent, confident but isolated child as he grew to become heir apparent to the secretive kingdom.
The North Korean foreign ministry demanded the U.S. abandon its "current way of calculation" if it wished to revive bilateral talks.
"No water came out of the showers, faucets were missing and lights were not set up properly," Kim complained of facilities at a youth center.
"I can tell you we're monitoring the situation and continue to stay focused on our ultimate goal which is denuclearization," the White House press secretary said.
"He has nothing but yes men that tell him all the time whatever he wants to hear," Joe Scarborough alleged.
"I was actually sticking up for Sleepy Joe Biden while on foreign soil," the president tweeted.
"To be on foreign soil, on Memorial Day, and to side repeatedly with a murderous dictator against a fellow American and former Vice President speaks for itself," Joe Biden's communications director said.
The human rights campaign group showed world leaders attempting to blow out the candle in its logo.
"If he's working towards a deal, as you say, it's a deal we don't know about," John Brennan said. "He basically said he wants denuclearization. That is not going to happen."
President Donald Trump made the comments during his state visit to Japan.
"Can you imagine if Barack Obama in 2011 had said 'oh, Ayatollah Khomeini of Iran thinks Mitt Romney is low IQ and I'm totally with him,'" Al Jazeera presented Mehdi Hasan said on CNN.
The North Korean official referred to Bolton as more of a "security-destroying adviser" than a security adviser.
Republican Rep. Adam Kinzinger (IL), an Air Foce veteran, called out President Donald Trump on Sunday for siding with North Korean leader Kim Jong Un in attacking Democratic 2020 candidate Joe Biden.
Last week, North Korea's official Korean Central News Agency published commentary blasting Biden as a "snob lacking even the most basic qualities of a human being, much less a politician."
"I am worrying about my lack of English proficiency," Kim reportedly told South Korean President Moon Jae-in.
A child defecting from North Korea to meet her parents, who had already escaped Kim Jong Un's regime, was equipped with a GPS tracking device.
"It's not like [I'm] dealing with the president of France," the president reportedly told supporters.
Congresswoman and Democratic presidential candidate Tulsi Gabbard said her constituents in Hawaii are particularly concerned about North Korea's capabilities.
"Thus far what you've seen this president do is heap praise on Kim Jong Un and kind of revel in the spectacle of these summits, where nothing happens," said Ben Rhodes, former deputy national security adviser to Barack Obama.
President Donald Trump appeared to criticize South Korea during a Florida rally shortly before North Korea launched two more missiles.
About 7,700 U.S. soldiers' remains have remained unaccounted for in North Korea since the Korean War armistice nearly 66 years ago.
Jared Kushner "may be compromising American interests in ways that we don't know about," a watchdog lawyer said.
Estimates of the size of North Korea's test in September 2017 place it between 70 and 280 kilotons of TNT equivalent.
The North Korean leader also reportedly commanded troops to be at "high alert posture" and to prepare to "defend the political sovereignty and economic self-sustenance of the country."