Those old enough to remember the Vietnam War could be excused an eerie sense of deja vu when they hear the latest reports coming out of Afghanistan.
Just as the Americans made reassuring noises that the South Vietnamese military forces could stand on their own feet after the United States withdrew its huge military apparatus, similar statements have kept passing the lips of foreign commanders in Kabul that the military of the official Afghan Government led by President Hamid Karzai will be able to deal with the Taleban.
The American-backed Saigon-based regime subsequently crumbled to the invading North Vietnamese. The noises coming out of Kabul do not sound terribly confident that a repeat is not on the cards in Afghanistan. No wonder. Twice in a matter of weeks, New Zealand's SAS troops have had to come to the rescue of the Afghan units they are "mentoring", to save the local troops and the Karzai Government from major embarrassment.
Any latent pride felt by New Zealanders in the SAS's role in dealing with the earlier incident at Kabul's Intercontinental Hotel would have evaporated in the face of the firefight at the British Council headquarters last Friday.
If they had not done so already, New Zealanders will have been asking themselves one question: is it worth it?