The nuclear North Korea

washington/beijing - The North Korean nuclear program has been giving headache to the international community for decades. Recent estimates calculate the number of nuclear bombs of the country between ten (South Korean Ministry of Defense in January 2017) and 21 (US Institute of Science and International Security in June 2016).

In the sixties, North Korea turned its nuclear center in Yongbyon on. About twenty years later began the communist country to develop nuclear weapons. In 1994, Pyongyang promised after twenty years of its membership in the International Atomic Energy Agency (IAEA) on.

Below chart:

February 2005: North Korea claims to be first in possession of nuclear weapons. The country is committed in September to make a declaration of its nuclear program.

October 2006: The country launches its first underground nuclear test. The United Nations decide to sanctions against North Korea, which continue to be further strengthened in the years after new testing.

May 2009: The isolated country is doing a second nuclear test.

February 2013: Pyongyang launches a third nuclear test.

January 2016: The country makes own words for the first detonate a hydrogen bomb, the explosive force many times stronger than that of an atomic bomb. Experts in South Korea and other countries confirm a fourth nuclear test, but doubted whether it was a bomb.

September 2016: Pyongyang does one test an atomic bomb for the fifth time. South Korean soldiers speak of the then powerful explosion at a North Korean nuclear test. In late November the UN Security Council decision to the strictest sanctions against North Korea.