Here is what we know about Pyongyang’s past military co-operation with other countries:
VIETNAM
North Korea sent more than 1,000 soldiers to North Vietnam between 1966 and 1972, including hundreds of pilots who flew MiG-17s in combat, according to a book published in 2017 by the South Korean defence ministry’s Institute for Military History.
Another team of North Korean psychological warfare specialists was also deployed to support North Vietnam’s propaganda and abduction operations targeting South Korean troops in South Vietnam, while dozens of Vietnamese guerrillas were trained in North Korea, the South Korean book said.
But relations have cooled since Vietnam began embracing the West, launching political and economic reforms in the late 1980s and establishing diplomatic ties with South Korea in 1992.
EGYPT
During the Yom Kippur War in 1973, North Korea sent a group of about 1,500 military advisers and some 40 air force personnel to Egypt, following a military assistance pact between its late leader Kim Il Sung and Egypt’s Hosni Mubarak, said Niu Song, a professor at Shanghai International Studies University.
LIBYA
North Korea fostered military exchanges with Libya under Muammar Gaddafi, clinching a 10-year alliance treaty in 1982, which called for either to render military aid if the other was attacked and threatened by a third country.
SYRIA
IRAN
Both subject to U.N. sanctions, North Korea and Iran have also been suspected of co-operating on nuclear and ballistic missile programmes, exchanging technical expertise and components.
AFRICA
North Korea has had longstanding ties with authoritarian regimes in Zimbabwe, Uganda and elsewhere in Africa since the Cold War era, engaging in arms sales and military training.
In 2011, a South Korean lawmaker said North Korea had more than 100 rounds of arms sales talks between 1999 and 2008 with countries such as Angola, Congo, Libya, Tanzania and Uganda, citing confidential government data.
The transactions aimed at earning dollars to buy newer weapons and parts from Russia by selling old, cheap conventional ones in Africa, according to the Institute for National Security Strategy of South Korea’s national intelligence agency.
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Reporting by Hyonhee Shin;
Editing by Ed Davies and Clarence Fernandez
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