SEOUL, South Korea (AP) — The powerful sister of North Korean Kim Jong Un on Thursday accused the United States of “gangster-like” hypocrisy for criticising her country’s failed launch of a military spy satellite and insisted a successful launch will be made soon.

Kim Yo Jong said North Korea’s efforts to acquire space-based reconnaissance capabilities were a legitimate exercise of its sovereign right and restated the country’s rejection of UN Security Council resolutions that ban it from conducting any launch involving ballistic missile technology.

Her comments on state media came a day after the rocket carrying the satellite failed. North Korea said the rocket lost thrust after a stage separation and crashed in waters off the Korean Peninsula’s western coast.

Washington, South Korea and Japan had quickly criticised the launch. Adam Hodge, a spokesperson at the US National Security Council, said Washington strongly condemns the North Korean launch because it used banned ballistic missile technology, raised tensions and risked destabilising security in the region and beyond.

In her statement, Kim Yo Jong briefly mentioned Hodge’s comments before saying the United States “is letting loose a hackneyed gibberish prompted by its brigandish and abnormal thinking.”

“If the DPRK’s satellite launch should be particularly censured, the US and all other countries, which have already launched thousands of satellites, should be denounced. This is nothing but sophism of self-contradiction,” she said, using the initials of North Korea’s formal name, the Democratic People’s Republic of Korea.

She noted how the United States closely monitors the North through its own reconnaissance satellites and other aerial assets, calling the Americans a “group of gangsters” who would deem it as “illegal and threatening” had North Korea attempted to send a satellite into space by balloon.

“The far-fetched logic that only the DPRK should not be allowed to do so according to the (UN Security Council’s) ‘resolution’ which bans the use of ballistic rocket technology irrespective of its purpose, though other countries are doing so, is clearly a gangster-like and wrong one of seriously violating the DPRK’s right to use space and illegally oppressing it,” she said.

“It is certain that the DPRK’s military reconnaissance satellite will be correctly put on space orbit in the near future and start its mission,” she added.

Citing what she described as US hostility toward the North, Kim reiterated that Pyongyang has no intent to reengage in negotiations with Washington, which have stalemated since 2019 because of disagreements over crippling US-led sanctions imposed over the North’s nuclear weapons and missiles programme.

Wednesday’s launch extended a provocative run in North Korean military demonstrations, including the test-firings of around 100 missiles since the start of 2022 that underscored Kim Jong Un’s attempts to acquire dual ability to conduct nuclear strikes on both the US mainland and South Korea.

Wednesday’s failed launch raised security jitters in South Korea and Japan, where residents in some areas were briefly urged to take shelter shortly after the launch. South Korea’s military later salvaged an object presumed to be part of the North Korean rocket in waters 200 kilometres (125 miles) west of the southwestern island of Eocheongdo and plans to analyse the technology.

A military spy satellite is one of several high-tech weapons systems that Kim has publicly vowed to develop to bolster his nuclear deterrent in the face of US sanctions and pressure. Other weapons on his wish list include a multi-warhead missile, a nuclear submarine, a solid-propellant intercontinental ballistic missile and a hypersonic missile.