The Tet Offensive was planned by (PAVRN) the People's Army of Vietnam and carried out in coordianted maneuvres by both the Viet Cong and the PAVRN. It's success (psychological) cannot be singled out as a succes just by the Vietcong. Without North Vietnman's involvemnt the Tet Offensive and the war would have had different results.

The war just did not invlove the the (the People's Liberation Army) Vietcong but also (substantially) by divisional sized forces of the Northern Republic of Vietnamn's army. The PAVRN was greatly assisted with supplies, guidance from the USSR.