The video showed soldiers running into concrete tiles and rolling around on the floor on smashed glass.
"The U.S. has frequently signaled it's not hostile to our state, but there is no action-based evidence to make us believe that they are not hostile," Kim said.
Kim confirmed plans to initiate a five-year plan to recover "the national economy and solving the people's food, clothing and housing problems."
Kim Jong Un said that South Korea would need to forgo its "double-dealing attitude" if it wanted the relationship between the Koreas to progress.
"The U.S. remains utterly unchanged in posing military threats and pursuing hostile policy," Kim said, "but employs more cunning ways and methods in doing so."
North Korean Supreme Leader Kim Jong Un says he intends to restore inter-Korean communication lines "from early October."
Rodong Sinmun reported that North Korea's Academy of National Defense Science "conducted a test launch of the newly developed hypersonic missile 'Hwasong-8.'"
The U.S. Indo-Pacific Command said the launch wasn't an immediate threat but it spotlights "the destabilizing impact of [North Korea's] illicit weapons program."
North Korea's U.N. envoy said "nobody can deny the righteous right to self-defense for the DPRK to develop, test, manufacture and produce the weapon systems" like those fielded by its rivals.
An excerpt shared with Newsweek of the upcoming book "Peril" adds another insult to a long list of heated rhetoric exchanged between both leaders.
"The efficiency and practicality of the weapon system operation was confirmed to be excellent," KCNA said.
North Korean officials promised to "firmly defend the dignity and fundamental interests of our people" as the country celebrated its 73rd anniversary.
Kim, wearing a gray suit, watched military celebrations to mark his nation's founding from a balcony overlooking Kim Il Sung Square in Pyongyang.
"If we were informed of the truth about North Korea, none of us would have gone," said one victim of a resettlement program for Korean residents of Japan.
Some experts speculate that North Korea may want to bypass certain vaccines, like the Sinovac shot offered to the country, in favor of others.
After video emerged on Tuesday, a district in Sacramento conducted an investigation into a high school government teacher and determined he should be dismissed for his political activism.
North Korea closed its border to nearly all traffic near the start of the COVID-19 pandemic last year and claims to not have confirmed a single case.
Despite criticism that he was overly friendly with Kim, Trump has defended his relationship with the North Korean dictator.
"Ensuring human rights in the U.S. is tantamount to building a castle in the air," the North Korean Foreign Ministry said.
A South Korean Foreign Ministry spokesperson told Newsweek that the country and its U.S. ally "are committed to continuing close coordination to resume dialogue" with North Korea.
One expert said Kim Jong Un is likely using his sister as a mouthpiece to express any anger and threats aimed at South Korea and the United States.
The joint military exercises, which typically take place twice a year, have long been a source of tension between Pyongyang, Seoul and Washington.
"Our offer remains to meet anywhere, anytime without preconditions. Ultimately, we hope DPRK will respond positively to our outreach," a senior Biden administration official told Newsweek.
Questions about the 37-year-old dictator's health have been rife since his rapid weight loss earlier this year.
Kim Yo Jong said the scheduled joint U.S.-South Korea military exercises in August could "seriously undermine" efforts to restore trust in the Korean Peninsula.
"At present the hostile forces systematically keep bolstering up their capabilities for making a preemptive attack on the DPRK and increase armaments while intensifying all sorts of frantic and persistent war drills for aggression," North Korean Supreme Leader Kim Jong Un warned.
North Korea's official newspaper, Rodong Sinmun, warned that farming has become a "life or death" issue amid severe food shortages.
Wendy Sherman has expressed concerns about food security and the COVID pandemic in the isolated country.