Separately, Kim's powerful sister criticized South Korea's military for saying it had seen an apparent military parade taking place in Pyongyang.
Some say Kim Jong Un may have demoted his sister - considered by many to be North Korea's second-most powerful official - over general policy failures.
Kim said the country must do everything it can to increase nuclear war deterrence and build maximum military capability.
The development is a surprise because Kim Yo Jong, who became an alternate member of the Politburo previous year, was widely expected to receive full bureau membership during a congress of the ruling Workers' Party that ended Tuesday. Outside experts say such sectors would be crucial to North Korean hopes to revitalize industrial production that has been decimated by sanctions and halted imports of factory materials amid the pandemic.
North Korea watchers say the promotion may be aimed at boosting Kim's authority ahead of Biden's inauguration on January 20 as denuclearization talks with the United States remain deadlocked.
Foreign currencies have been broadly used in both trade and private market transactions in North Korea since 2009 when a botched currency revaluation under the rule of Kim's father sparked hyperinflation and public unrest.
Kim Yo Jong rose to global prominence after her brother's high-stakes nuclear diplomacy with President Trump and other world leaders in 2018 and 2019.
KCNA reported that the congress will be followed on Sunday by a meeting of the Supreme People's Assembly, the North's rubber-stamp legislature. Their diplomacy deteriorated after the collapse of their talks in Vietnam in February 2019, when the Americans rejected North Korea's demand for major sanctions relief in exchange for a partial surrender of its nuclear capabilities.
The North's weapons programmes have made rapid progress under Kim, including by far its most powerful nuclear blast to date and missiles capable of reaching the entire continental United States, at a cost of increasingly stringent global sanctions. While the country is believed to have accumulated at least dozens of nuclear weapons, outside estimates on the exact status of its nuclear and missiles programs vary widely.
The North Korean leader declared the USA the "biggest main enemy" and said he would do "everything" to advance Pyongyang's nuclear and military capabilities, laying out a renewed diplomatic challenge to the incoming Biden administration.
North Korea's state-run Korean Central Television reported Kim's closing remarks at the congress, which started on January 5.
When the eight-day congress, the first of its kind since 2016, opened last week, Kim Yo Jong, who is thought to be about 32, sat on the leadership podium, standing out amid the often elderly, overwhelmingly male party cadres.
Oh, the analyst, said Kim Yo Jong is likely the second-most powerful woman in North Korean history after Kim Song Ae, the late second wife of Kim Il Sung.
The North last held a massive military parade in October to celebrate the 75th founding anniversary of the Workers' Party, showing off its state-of-the-art weapons, including a new intercontinental ballistic missile and a submarine-launched ballistic missile.
In her statement Wednesday, she slammed South Korea for provoking the North with its announcement that it had detected intelligence that North Korea held a military parade or a rehearsal for such a parade this week.
"The (South Koreans) are a truly weird group hard to understand".
North Korean state TV has not shown a military parade as of Wednesday morning.
The military plans announced during one of the biggest political events in North Korea in the last five years may sound threatening - and it is indeed a threat.
Shijiazhuang will begin a second round of nucleic acid testing Wednesday, which is scheduled to finish in two days. Across China, the number of new asymptomatic cases rose to 81 from 76 the previous day.
The court asserted it had the power to suspend the legislation, but the stay must not be for an empty objective . The apex court has given time to the Union government to file an amicable solution to the agitation.
There were 1,700 COVID-19 patients in hospital on Tuesday, nearly double the 2020 peak, the Irish health service said. The Health Protection Surveillance Centre (HPSC) has today been notified of 46 additional deaths related to Covid-19.
Markieff Morris will not play again in the game between the Los Angeles Lakers and the Houston Rockets . The row started when Morris knocked Rockets forward Jae'Sean Tate to the court with a flagrant foul.
Maintenant, le Paris Saint-Germain est dans la cour des grands, c'est-à-dire qu'il est avec le Real Madrid, Barcelone. Près de cinq ans après son départ du PSG , Laurent Blanc a enfin repris du service.
After noticing she was stumbling, James paused the ceremony to check on Trott, who replied, "I'm, like, seeing stars". Fellow contestant Bri Springs told producers that it looked like Trott was about to faint.
Heilongjiang province reported 36 new asymptomatic cases in Wangkui county, which also went into lockdown on Monday. The city of Suihua, which borders the provincial capital Harbin, put its 5.2 million people under lockdown.
The curfew is needed to prevent gatherings that have fueled the rampant spread of the virus, Quebec Premier Francois Legault said. Quebec became the first province to enforce a curfew over the weekend to help curb the spread of COVID-19.
He was also on the team that helped secure a conviction of former District of Columbia mayor Marion Barry for cocaine possession. In a tweet, he called Garland "a sound choice" and "a man of great character, integrity, and tremendous competency in the law".
The Indian seamer was seen in the best of form as he bowled in full flow and finished with figures of 1-29 on Monday. After winning the toss , Puducherry elected to bat and put up a respectable score of 138 for six in 20 overs.
Cécilia Sarkozy rémunérée par l'Assemblée en 2002
Un emploi qui aurait duré 9 mois, et aurait permis " d'assurer un suivi des dossiers " assure le cabinet de Nicolas Sarkozy . Contacté par Le Canard , Cécilia Attias n'a pas souhaité s'exprimer sur le sujet.
"Chef" Season Two, Premiering Jan. 21
Like last season, the show's other leading star, Gomez's grandfather, adoringly known as Papa, is back for more fun. Let us know in the comments section below.