, Pyongyang After 1945, the
USSR supplied the economic and military aid that enabled North Korea to mount its invasion of South Korea in 1950. Soviet aid and influence continued at a high level during the Korean War. This was only the beginning of North Korea as governed by the faction which had its roots in an anti-Japanese Korean nationalist movement based in Manchuria and China, with
Kim Il Sung participating in this movement and later forming the
Workers' Party of Korea (WPK). The assistance of Chinese troops, after 1950, during the war and their presence in the country until 1958 gave China some degree of influence in North Korea. In 1961, North Korea concluded formal mutual security treaties with the Soviet Union and
China, which have not been formally ended. In the case of China, Kim Il Sung and Zhou Enlai signed the
Sino-North Korean Mutual Aid and Cooperation Friendship Treaty, whereby Communist China pledged to immediately render military and other assistance by all means to its ally against any outside attack. The treaty says, in short that: The Chairman of the People's Republic of China and the Presidium of the Supreme People's Assembly of the Democratic People's Republic of Korea, determined, in accordance with Marxism–Leninism and the principle of proletarian internationalism and on the basis of mutual respect for state sovereignty and territorial integrity, mutual non-aggression, non-interference in each other's internal affairs, equality and mutual benefit, and mutual assistance and support, to make every effort to further strengthen and develop the fraternal relations of friendship, co-operation and mutual assistance between the People's Republic of China and the Democratic People's Republic of Korea, to jointly guard the security of the two peoples, and to safeguard and consolidate the peace of Asia and the world ... [Article II:]The Contracting Parties will continue to make every effort to safeguard the peace of Asia and the world and the security of all peoples ... [Article II:] In the event of one of the Contracting Parties being subjected to the armed attack by any state or several states jointly and thus being involved in a state of war, the other Contracting Party shall immediately render military and other assistance by all means at its disposal ... [Article V:] The Contracting Parties, on the principles of mutual respect for sovereignty, non-interference in each other's internal affairs, equality and mutual benefit and in the spirit of friendly co-operation, will continue to render each other every possible economic and technical aid in the cause of socialist construction of the two countries and will continue to consolidate and develop economic, cultural, and scientific and technical co-operation between the two countries ... [Article VI:] The Contracting Parties hold that the unification of Korea must be realized along peaceful and democratic lines and that such a solution accords exactly with the national interests of the Korean people and the aim of preserving peace in the Far East. In 1986, the two countries signed an agreement on military co-operation. Kim was also close to maverick Communist leaders,
Josip Broz Tito of Yugoslavia, and
Nicolae Ceaușescu of Romania. North Korea began to play a part in the global radical movement, forging ties with such diverse groups as the
Black Panther Party of the US, the
Workers' Party of Ireland, and the
African National Congress. As it increasingly emphasized its independence, North Korea began to promote the doctrine of
Juche ("self-reliance") as an alternative to orthodox
Marxism-Leninism and as a model for developing countries to follow. When North-South dialogue started in 1972, North Korea began to receive diplomatic recognition from countries outside the Communist bloc. Within four years, North Korea was recognized by 93 countries, on par with South Korea's 96. North Korea gained entry into the
World Health Organization and, as a result, sent its first permanent observer missions to the
United Nations (UN). In 1975, it joined the
Non-Aligned Movement. Libyan Leader
Muammar Gaddafi met with Kim Il Sung and was a close ally of the DPRK. In 1983, North Korea carried out the
Rangoon bombing, a failed assassination attempt against South Korean dictator
Chun Doo-hwan while he was visiting
Burma. This attack on neutral soil led many Third World countries to reconsider their ties with North Korea. During the 1980s, the pace of North Korea's establishment of new diplomatic relations slowed considerably. Following Kim Il Sung's 1984 visit to Moscow, there was a dramatic improvement in
Soviet-DPRK relations, resulting in renewed deliveries of advanced Soviet weaponry to North Korea and increases in economic aid. In 1989, as a response to the 1988 Seoul Olympics, North Korea hosted the
13th World Festival of Youth and Students in Pyongyang. South Korea established diplomatic relations with the Soviet Union in 1990 and the People's Republic of China in 1992, which put a serious strain on relations between North Korea and its traditional allies. Moreover, the demise of Communist states in
Eastern Europe in 1989 and the disintegration of the Soviet Union in 1991 had resulted in a significant drop in communist aid to North Korea, resulting in largely decreased relations with Russia. Subsequently,
South Korea developed the "
sunshine policy" towards North Korea, aiming for peaceful
Korean reunification. This policy ended in 2009. In September 1991, North Korea became a member of the UN. In July 2000, it began participating in the
ASEAN Regional Forum (ARF), as Foreign Minister
Paek Nam-sun attended the ARF ministerial meeting in
Bangkok July 26–27. North Korea also expanded its bilateral diplomatic ties in that year, establishing diplomatic relations with Italy, Australia and the Philippines. The United Kingdom established diplomatic relations with North Korea on December 13, 2000, as did
Canada in February 2001, followed by Germany and
New Zealand on March 1, 2001. in June 2018 In 2006, North Korea test-fired a series of ballistic missiles, after Chinese officials had advised North Korean authorities not to do so. As a result, Chinese authorities publicly rebuked what the west perceives as China's closest ally, and supported the
UN Security Council Resolution 1718, which imposed sanctions on North Korea. In January 2009, China's
paramount leader Hu Jintao and North Korea's supreme leader Kim Jong Il exchanged greetings and declared 2009 as the "year of China-DPRK friendship", marking 60 years of diplomatic relations between the two countries. On November 28, 2010, as part of the
United States diplomatic cables leak,
WikiLeaks and media partners such as
The Guardian published details of communications in which Chinese officials referred to North Korea as a "spoiled child" and its nuclear program as "a threat to the whole world's security" while two anonymous Chinese officials claimed there was growing support in Beijing for Korean reunification under the South's government. In 2017, North Korea tested the
Hwasong-15, an
intercontinental ballistic missile capable of striking anywhere in the US. Estimates of North Korea's nuclear arsenal at that time ranged between 15 and 60 bombs, probably including
hydrogen bombs. In February 2018, North Korea sent a high-level delegation to the
Winter Olympics in South Korea. ==Inter-Korean relations==