I'd be interested to hear the author explain what "regular violations of nearby Laos and Cambodia" actually means.
The same bombing campaign hit both countries similarly. Laos seems to have been slightly worse off, but the concept applies to both countries. The information at the museum in Cambodia will broadly inform the Laos situation. Besides if there is a similar resource in Laos I'm unaware of it.
> The landmines in Cambodia were placed by different governments and factions (including the Lon Nol, Khmer Rouge, the Heng Samrin and Hun Sen regimes, as well as the Coalition Government of Democratic Kampuchea who, with international support retained the UN seat throughout much of the 1980s) that clashed during the Civil War in Cambodia in the 1970s and 1980s
https://news.ycombinator.com/item?id=14873083
So it's not clear to me that has anything to do with the US presence in Vietnam.
My visit to this museum sticks with me to this day, and my desire to promote it is perhaps out of place on this specific topic.
I stand by all of my other links as being directly relevant.