Left–Right Coalition Movement
Yeo Un-hyeong and Kim Gyu-sik formed a left–right coalition committee and issued seven principles, but the Cold War and Yeo’s assassination ended the effort.
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When the Joint Commission stalled and calls for a separate southern government emerged, the centrists Yeo Un-hyeong (centre-left) and Kim Gyu-sik (centre-right) set up a coalition committee in July 1946 with US military government backing. In October they issued seven principles, including resuming the Joint Commission, purchase of land with free distribution to farmers, and legislation on dealing with collaborators.
Both the right (Korea Democratic Party) and the left (Korean Communist Party) rejected the principles. In December 1946 the military government created the South Korean Interim Legislative Assembly with Kim Gyu-sik as chairman. As the Truman Doctrine of 1947 opened the Cold War and US support was withdrawn, and with Yeo’s assassination in July 1947, the movement effectively ended.