McAllister cited analogies between the two wars:
• In both wars, security forces had an overwhelming advantage in firepower over lightly armed but highly mobile guerrillas.
• Insurgents in both cases were able to use safe havens in neighboring countries to regroup and re-equip.
_He pointed to McChrystal's order to limit airstrikes and prevent civilian casualties, linking it to the overuse of air power in Vietnam which resulted in massive civilian deaths.
McAllister drew a parallel to another failed political strategy from Vietnam — the presidential election.
"That ('67 ballot) helped ensure that U.S. efforts would continue to be compromised by its support for a corrupt, unpopular regime in Saigon," McAllister said.
Rufus Phillips, Holbrooke's boss in Vietnam and author of the book "Why Vietnam Matters," echoed that warning.
"The rigged election in South Vietnam proved (to be) the most destructive and destabilizing factor of all," said Phillips, now in Kabul helping to monitor the upcoming election.
David Kilcullen, a counterinsurgency specialist who will soon assume a role as a senior adviser to McChrystal, compared Karzai to South Vietnamese President Ngo Dinh Diem.
"He has a reasonably clean personal reputation but he's seen as ineffective; his family are corrupt; he's alienated a very substantial portion of the population," Kilcullen said Thursday at the U.S. Institute of Peace. "He seems paranoid and delusional and out of touch with reality," he said. "That's all the sort of things that were said about President Diem in 1963."