Democratic Republican Party (South Korea) combination of state and corporate chaebol power pioneered by the party continues to be deeply built into the foundations of the South Korean economic system. Following the promulgation in October 1972 of the Yushin Constitution, which implemented numerous authoritarian centralizing measures such as the direct appointment of a third of the National Assembly by the President, the DRP assumed an unprecedented level of political power. For the next eight years, South Korea was essentially a one-party state ruled by the DRP. After Park's assassination on 26 October 1979 and the seizure of power by Chun Doo-hwan in the coup d'état
South Korea by the United States military in South Korea in response to North Korean missile tests has been protested strongly by the Chinese government, concerned that the technologically advanced missile defence could be used more broadly against China. Relations between the governments have cooled in response, with South Korean commercial and cultural interests in China having been targeted, and Chinese tourism to South Korea having been curtailed. The situation was largely resolved by South Korea making significant military concessions to China in exchange for THAAD, including not deploying any more anti-ballistic missile systems in South Korea and not participating in an