"Pol Pot-Ieng Sary clique" or defect to Vietnam. In a major turning point in the course of Soviet-Vietnamese and Sino-Vietnamese diplomatic relations, and ultimately the Vietnamese invasion of Kampuchea, a Treaty of Friendship and Cooperation was signed between Vietnam and the Soviet Union on 3 November 1978, which guaranteed the former of vital Soviet military aid in the scenario that China intervened in the conflict. Later, in November 1978, a command and control headquarters was established for the planned invasion of Kampuchea, with Senior General Lê Đức Anh taking full control of PAVN units along the border areas. The Vietnamese government drafted 350,000 men into the military to replace earlier losses and augment its units along the border. While the new recruits were completing training, ten divisions were deployed to the border regions of Long An, Đồng Tháp and Tây Ninh Provinces. Vietnam also shifted three divisions based in Laos south towards the Laos-Kampuchea border. On 13 December 1978, the Chinese Government warned Vietnam that its patience was limited, and that Vietnam would be punished if it behaved in an "unbridled fashion". The final piece of the Vietnamese strategy emerged when Vietnam announced the formation of the Kampuchean United Front for National Salvation (KUFNS) in the "liberation zones" of Kampuchea. Hanoi claimed that KUFNS was an independent Kampuchean communist movement, with members drawn from all walks of life. Heng Samrin, formerly a member of the Khmer Rouge and commander of the KRA 4th Division, was the chairman of the KUFNS Central Committee. Previously, the KUFNS was known as the Provisional Revolutionary Government of Kampuchea (PRGK), which consisted of 300 former Khmer Rouge cadres who defected to Vietnam. The PRGK regularly sent representatives abroad in search of support, before Vietnam abandoned the "people's war" concept in favour of a conventional military campaign. Not to be outdone by the Vietnamese military build-up, the Government of Democratic Kampuchea was busy strengthening its armed forces with Chinese support. In previous years, China had only provided the KRA with a limited quantities of arms and ammunition, but as relations with Vietnam worsened in 1978, Beijing established additional supply routes through Kampuchea and increased the volume of military hardware which travelled down each route. On the eve of the Vietnamese invasion, Kampuchea had an estimated 73,000 soldiers in the Eastern Military Zone bordering Vietnam. At that time, all branches of the Kampuchean armed forces were significantly