The totalitarian state has said that its new eye in the sky has already provided images of major US and South Korea military sites, as well as photos of the Italian capital Rome.
South Korea said the launch would push it to suspend a 2018 inter-Korean tension-reduction agreement and resume frontline aerial surveillance of North Korea.
Kim received five explosive kamikaze drones, a 'Geran-25' reconnaissance drone and a bulletproof vest as gifts from a regional governor.
Kim’s visits to military and tech sites this week possibly hint at what he wants from Russia, perhaps in exchange for supplying arms to refill Putin’s declining reserve for his invasion of Ukraine.
All the Russian warplanes shown to Kim on Saturday were among the types that have seen active use in the war in Ukraine.
Putin, who has sought to strengthen alliances with other leaders shunned in Western capitals, met Kim on Wednesday at a spaceport in Russia's far east.
Russian state TV typically covers Putin's every public move, while North Korea is very serious about glorifying and maintaining the dignity of Kim.
Historic allies, Russia and North Korea are both under rafts of global sanctions with Kim's visit sparking widespread concern over illicit arms agreements.
Experts say Russia will likely seek artillery shells and antitank missiles from North Korea, which wants advanced satellite and nuclear-powered submarine technology in return.
Japan's top government spokesman Hirokazu Matsuno told reporters that the missiles "appear to have fallen outside Japan's exclusive economic zone but we are analysing details."
A meeting with Putin would be Kim’s first with a foreign leader since North Korea closed its borders in January 2020.
Kim is making his first foreign trip since the COVID-19 pandemic, during which North Korea imposed tight border controls for more than three years.
North Korean train presumably carrying leader Kim Jong Un departed for Russia, South Korea media say
Japan’s Kyodo news agency cited Russian officials as saying that Kim was possibly heading for Russia in his personal train.
Pandemic-era border closures have left North Korea with severe economic difficulties, and Kim is likely to seek supplies of food and energy to address shortfalls.
The White House's National Security Council (NSC) spokesperson said that "arms negotiations between Russia and the DPRK are actively advancing," using an acronym for North Korea.
Many experts say Kim eventually aims to use his modernized weapons arsenals to wrest US concessions, such as sanctions relief, whenever diplomacy resumes with Washington.
At the meeting, Kim dismissed Chief of the general staff Pak Su Il, replacing him with Vice Marshal Ri Yong Gil, KCNA said without giving further details.
North Korea’s invitation of Russian and Chinese delegates was a rare diplomatic opening since the start of the COVID-19 pandemic.
The North Korean leader has been steadfast in his support for Moscow's invasion of Ukraine, including, Washington says, supplying rockets and missiles -- a charge Pyongyang has angrily denied.
The failed launch and North Korean efforts to modernize its weapons arsenals were discussed extensively at a three-day ruling party meeting.