Tetsuo666

Quick recall of the size of the bombings in question:

Massive aerial bombardment against Pathet Lao and NVA forces was carried out by the United States in prevent the collapse of Lao's central government and to prevent the use of the Ho Chi Minh Trail. It has been reported that Laos was hit by an average of one B‑52 bombload every eight minutes, 24 hours a day, between 1964 and 1973. U.S. bombers dropped more ordnance on Laos in this period than was dropped during the whole of the World War II. Of the 260 million bombs that rained down, particularly on Xiangkhouang Province on the Plain of Jars, some 80 million failed to explode, leaving a deadly legacy.[19] Laos is the most heavily bombed country, per capita, in the world. Because it was particularly heavily affected by cluster bombs during this war, Laos was a strong advocate of the Convention on Cluster Munitions to ban the weapons and assist victims, and hosted the First Meeting of States Parties to the convention in November 2010.

Wikipedia

Source used in the wikipedia article

Further details in another article.

I don't want to be mean, but that description above would fit very nicely a powerful trojan.