I think Cambodia should repay it, after USA has collected every last UXO from Cambodia, and while they're at it, Laos and Vietnam.

Perhaps a few Americans could spend 6 months digging up cluster bombs. I hear its nearly as good a workout as swinging a kettlebell.
http://www.smh.com.au/world/fury-in-cambodia-as-us-asks-to-be-paid-back-hundreds-of-millions-in-war-debts-20170311-guvxyp.html

I do not know who is right or wrong in this....all I know is.. lets hope none of these countries ever ask any Western nation to help them out when they are under attack.....the Yanks never ever get a thank you its always they did this they did that...and of course the Kymer Rouge now are almost the saviors...

write it off America  .. just never forget thats all you can do.

Its time for someone in authority, who has a least half a brain and a sense of decency, to put an end to this travesty.

It costs the United States $80 million for a nuclear weapon in their stockpile. How many thousands of them do the United States have in their arse.... arsenal? Only 7 nuclear weapons are the equivalent cost of what Cambodia's debt is to the United States. The United States committed 1 trillion dollars to a 10-year campaign in the Middle East, with the intention of getting control of Iraqi oil fields. I am no economist. Yet, my knowledge of cost-benefit ratios is enough to know that it seems hypocritical of the United States to ask for a debt that is a lot to a country like Cambodia, but minuscule to the United States. Of course, I personally would not turn down $500 million. But, consider the development that Cambodia has gone through in the last 20 years, you would think that the United States would consider it as aid, and forgive the debt.