Paechon Line the Tohae Line. Following the end of the Pacific War and the subsequent partition of Korea, most of the Tohae Line was located in the US zone of occupation that later became South Korea, with the line being divided along the 38th Parallel between Changbang and Kalsan, and the Korean National Railroad operated passenger trains on the line between Tosŏng and Ch'ŏngdan until 1950. The line was heavily damaged during the Korean War, and the destruction of the Ryesong River bridge left the line truncated at Paech'ŏn. The truncated line ended up in North Korea after the Korean Armistice, becoming
Soviet Union in the Korean War both an unreliable and demanding ally and took greater steps to ensure autarky from the USSR in the years following the War. In 1960, China broke from the Soviet Union in an event known today as the Sino-Soviet Split, creating a rift amongst all communist powers which were expected to pick one side of the divide. The North Korean regime, which bordered both countries, successfully navigated the split by playing one power off against the other. It did not firmly align with either power until the Soviet reforms under Mikhail Gorbachev compelled the regime to align with China. This split,