With everyone making broad comparisons about Vietnam and Afghanistan (Mathews and Howard Fineman just spent 10 minutes talking about how the Vietcong are comparable to the Afghan resistance).
The plain, unrefutable fact is that after the Tet Offensive the Vietcong were destroyed as a military force. What was not known until after the war was that the design of the campaign exposed Viet Cong military units in vulnerable urban areas while keeping NVA forces in Khe Sanh and Hue leading some to conclude that the destruction of the military units of the Viet Cong by the North was intentional.
Here are the facts:
http://en.wikipedia.org/wiki/Viet_CongThe offensive was undertaken in the hope of triggering a general uprising, but urban Vietnamese did not respond as the Vietcong anticipated. About 75,000 communist soldiers were killed, according to Trần Văn Trà, commander of the "B-2" district, which consisted of southern South Vietnam.<61> "We did not base ourselves on scientific calculation or a careful weighing of all factors, but...on an illusion based on our subjective desires," Trà concluded.<62> Earle G. Wheeler, chairman of the Joint Chiefs of Staff, estimated that Tet resulted in 40,000 communist dead<63> (compared to about 6,000 U.S. and South Vietnamese dead). "It is a major irony of the Vietnam War that our propaganda transformed this debacle into a brilliant victory. The truth was that Tet cost us half our forces. Our losses were so immense that we were unable to replace them with new recruits," said PRG Justice Minister Trương Như Tạng.
. . .
Aside from some districts in the Mekong Delta, the Vietcong failed to create a governing apparatus in South Vietnam following Tet, according to an assessment of captured documents by the U.S. Central Intelligence Agency.<66> The breakup of larger Vietcong units increased the effectiveness of the CIA's Phoenix program (1967–72), which targeted individual leaders, as well as the Chiêu Hồi Program, which encouraged defections. By the end of 1969, there was no longer any communist-held territory, or "liberated zones," in South Vietnam, according to the official communist military history.<67> There were no predominantly southern units left and 70 percent of communist troops in the South were northerners.<68>
After the war I had a singularly unique opportunity to discuss this with both Viet Cong and North Vietnamese leaders after the war.
I met former Viet Cong Justice Minister Truong Nhu Tang (cited above) and had lengthy discussions with him at Galang Refugee Camp in Indonesia. He detailed how after the war no Viet Cong were given any real positions of power but a few were given symbolic positions. The North dissolved the PRG without even bothering to call for a meeting. Nguyen Hu Tho was the big winner of the symbolic Viet Cong award and eventually became one of the Vice Presidents and Vice Chairman of the national assempbly. Truong was resettled to France.
Viet Cong's leading general Tran Va Tra (also cited above) would later write about the strategic failures of the North in supporting the Viet Cong. Tran Va Tra would become a token member of the government as vice minister of defense. After publishing his version of the Tet Offensive he would spend the rest of his life under house arrest.
Another example is Dương Quỳnh Hoa who was a cabinet member in the Viet Cong Provisional Government who was bitterly disappointed with the North Vietnamese post war government. After the Tet offensive she fled and survived in the jungle. She latter said of the North Vietnamese :"I have been a communist all my life, but now I've seen the realities of Communism, and it is a failure — mismanagement, corruption, privilege, repression. My ideals are gone.
http://en.wikipedia.org/wiki/Duong_Quynh_HoaLater I would visit and negotiate logistical arrangements with the new leaders in the North. When I asked them about the Viet Cong and their leaders their normally difficult-to-read faces produced some very uncharacteristic chuckles. One of them noted how "coincidental" it was that General Giap was out of the country getting treated in Eastern Europe when the most important combined campaign of the war took place.
If your going to go on national TV and talk about the Viet Cong you should be aware of the facts of its fate that are now well documented. The Viet Cong were not significantly involved in the fall of Saigon. The military offensive that unified the country was undertaken by regular elements of the NVA in the campaign known as the "Ho Chi Minh Campaign".