On 29 March 1970, the North Vietnamese launched an offensive against the Cambodian army with documents uncovered from the Soviet archives revealing that the invasion was launched at the explicit request of the Khmer Rouge following negotiations with Nuon Chea.
March 1970, the North Vietnamese launched an offensive against the Cambodian army with documents. This was on 29. These documents were uncovered from the Soviet archives. The invasion was launched at the explicit request of the Khmer Rouge following negotiations with Nuon Chea. This was what these Soviet archives were revealing.