SEOUL, South Korea (AP) — North Korean leader Kim Jong Un said the test of a newly developed intercontinental ballistic missile confirmed that his country has another “reliable and maximum-capacity” weapon to contain outside threats, as he warned the United States and its allies that their alleged provocative steps would lead to “their self-destruction,” state media reported Saturday.

North Korea’s state media said Kim oversaw the launch of the Hwasong-17 missile, a day after its neighbors said they had detected the launch of an ICBM that showed a potential ability to reach anywhere in the United States.

The North’s Korean Central News Agency said Kim observed the launch with his wife Ri Sol Ju and their “beloved daughter” as well as senior officials. State media photos showed Kim walking hand-in-hand with his daughter clad in a white jacket and a pair of red shoes, and watching together a huge missile loaded on a launch truck. It’s the first time for North Korea to publish the photo of Kim’s daughter. Observers say Kim observing a weapons launch with his family suggests that he was confident in its success.

Kim, 38, is the third generation of his family to rule North Korea. South Korean media reported he has three children born in 2010, 2013 and 2017 respectively. It wasn’t immediately known which child he took to the launch site.

Much of Kim’s private life is still unknown, but in 2013, after a trip to Pyongyang, retired NBA star Dennis Rodman told the British newspaper the Guardian that he and Kim had a “relaxing time by the sea” with the leader’s family and that he held Kim’s baby daughter, named Ju Ae.

Friday’s launch was part of the North’s ongoing barrage of missile tests that are seen as an attempt to expand its weapons arsenal and boost its leverage in future diplomacy. Some foreign experts said the Hwasong-17 missile is still under development but is the North’s longest-range ballistic weapon designed to carry multiple nuclear warheads to defeat US missile defense systems.

KCNA said the missile fired from the Pyongyang International Airport traveled up to a maximum altitude of about 6,040 kilometers (3,750 miles) and flew a distance of about 1,000 kilometers (620 miles) before it landed on the preset area in international waters off the country’s east coast.

“The test-fire clearly proved the reliability of the new major strategic weapon system to be representative of (North Korea’s) strategic forces and its powerful combat performance as the strongest strategic weapon in the world,” KCNA said.

Kim said his country is compelled to further bolster its “overwhelming nuclear deterrence” because US-led military threats have been getting more transparent. Kim stressed the need to have the US and its allies realize that their military steps against North Korea would “lead to their self-destruction,” KCNA said.

“Kim Jong Un solemnly declared that if the enemies continue to pose threats to the DPRK, frequently introducing nuclear strike means, our Party and government will resolutely react to nukes with nuclear weapons and to total confrontation with all-out confrontation,” KCNA said.

Kim’s statement suggests North Korea will continue its weapons testing activities as the United States is pushing to bolster its security commitment to its allies South Korea and Japan.