Where Did North Korea Test Its Nuclear Weapons


North Korea has famously tested nuclear weapons on at least four occasions, all of them in underground tunnels. The country’s first announced test in 2006 was quickly followed by two more tests in 2009 and 2013. In 2017, yet another test was conducted in an ambiguous region north of Pyongyang. The tests present a dangerous threat to global security and stability. It is essential that we learn all we can about these tests and how they were conducted.

What Do We Know About the Tests?

The series of nuclear tests conducted by North Korea have had very different yields, but the overall range of their effects indicate a growing nuclear capability. The traditional estimates for the range of the country’s nuclear weapons are about 8,000 to 13,000 kilotons with a maximum explosive yield of over 100,000 kilotons. Analysts also believe that the country is capable of building much larger nuclear weapons, though they have yet to test one.

All four nuclear tests by North Korea were conducted deep underground inside the country’s Punggye-ri test site. Located near the demilitarized zone that separates the two Koreas, Punggye-ri is thought to be where the country tested its first nuclear device in 2006. The 2013 test is thought to be the largest of the four with an estimated yield of between 10 and 20 kilotons.

The 2017 test is the most recent, and reportedly took place in an underground tunnel complex near Mantapsan in the North Hamgyong province. It is suggested to have been a hydrogen bomb, although the exact yield is unknown. According to a South Korean investigative team, the 2017 test completely destroyed the mountain above the underground test site, ‘rendering it unusable for future underground tests’.

Implications for the Region

North Korea’s nuclear tests have caused significant concerns in the region, with most of the surrounding countries either taking or contemplating military action. South Korea was the first to launch a military exercise in 2006 in response to North Korea’s 2nd nuclear test. Japan also increased defence spending and increased the quality of its military hardware as part of a “national effort” to protect the country following the successive nuclear tests.

Moreover, China tightened its sanctions on North Korea in April 2016 in order to curb the country’s nuclear capabilities. The sanctions, created in conjunction with the United Nations Security Council, were intended to limit the country’s ability to purchase and export materials that can be used in nuclear weapons development.

The series of nuclear tests have had regional and global implications that deepen existing political and military divisions in the region. They have also caused tensions between North Korea and the West, bringing it closer to the brink of war. As a result, many countries in the region have taken steps to increase their military and diplomatic strength in the wake of the tests.

International Reactions

The North Korean nuclear tests have met with strong international condemnation from countries across the globe. The United Nations condemned the tests in a unanimously approved Security Council resolution, while the Group of Seven (G7) collectively denounced the tests. The United States, in particular, strongly condemned the tests and threatened to impose additional sanctions on North Korea in an effort to prevent any further nuclear proliferation.

Similarly, France, the UK and Russia joined the United States in voicing their opposition to the tests and demanded a cessation of the country’s nuclear program. The International Atomic Energy Agency voiced its “strong opposition” to the tests, while the European Union imposed a range of economic and diplomatic sanctions on North Korea in response.

The North Korean government has steadfastly maintained that its nuclear program is for peaceful, defensive purposes only. Despite this, the international community has remained highly skeptical of North Korea’s claims and has instead increased pressure on the country to abandon its nuclear ambitions.

Current Status of North Korea’s Arsenal

At present, it is estimated that North Korea has between 20 and 60 nuclear weapons. It is believed that the country is capable of producing up to 100 more within the next year, but these figures are hard to verify due to its lack of transparency. Nevertheless, it is clear that the country is making progress with its nuclear capabilities.

Despite the international community’s persistent efforts, it appears that North Korea is unlikely to abandon its nuclear weapons program anytime soon. The country’s current leader, Kim Jong-un, has publicly declared that nuclear weapons are the cornerstone of his country’s security strategy and has vowed to bolster its nuclear stockpile in the face of growing external pressure.

Limitations of Sanctions

The international community has largely sought to address the North Korean nuclear issue through sanctions. Such punitive measures, however, are not always effective and may inadvertently encourage the North Korean government to remain defiant. Indeed, despite extensive economic sanctions and the threat of military action, North Korea has continued to develop its nuclear capabilities.

Sanctions can also have a deleterious effect on ordinary citizens, as they often lead to shortages in essential goods and services. Given the country’s already dire economic situation, any additional sanctions are likely to only exacerbate the hardships faced by the country’s citizens.

Engagement with North Korea

One of the more successful attempts at reducing tensions between North Korea and the international community came in 1994, when the US and North Korea signed an agreement to reduce the size of each country’s nuclear arsenals. This agreement, known as the Agreed Framework, saw North Korea make significant steps towards abandoning its nuclear weapons program in exchange for diplomatic recognition and economic aid from the US.

More recently, in 2018, North Korea offered to denuclearize the Korean Peninsula, to a certain extent, in exchange for security guarantees from the United States. Such an offer could signal a new direction for the nuclear standoff between the two countries, and present an opportunity to resolve the crisis.

The Role of the International Community

While diplomatic engagement may offer some degree of hope, ultimately, it is up to the international community to find a lasting solution to the North Korean nuclear issue. All parties involved must be willing to compromise, and to make difficult decisions in order to move the process forward.

The international community must also remain steadfast in its opposition to North Korea’s nuclear program, and demonstrate its commitment to nuclear non-proliferation. With the prospect of North Korea continuing to develop its nuclear arsenal, the threat of war and regional instability looms ever larger.


It is clear that North Korea has made significant progress in developing its nuclear capability, with four nuclear tests conducted under the leadership of Kim Jong-un. Such tests have had far-reaching implications for the region and for the international community, as many countries have responded with a mixture of sanctions and military exercises.

The international community must now find a way to address this crisis. Diplomatic dialogue has proved to be successful in the past, but the parties must be willing to make the necessary compromises. Ultimately, it is the responsibility of the international community to ensure nuclear non-proliferation and long-term global security.

Cassie Grissom is an American journalist and author living in Seoul, South Korea. She has been studying the Korean peninsula since 2011, and her work focuses on understanding human rights issues in North Korea. In addition to her work as an author, Cassie is an active advocate for human rights in North Korea. She regularly shares stories about life in North Korea with international audiences to raise awareness of the plight of its citizens.

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