Aiding the USSR breakup failed because the western governments allowed their citizens to commit actions in the USSR that would have been illegal in their own countries.
It wasn't one westerner who conspired to steal monies, it was many. They used networks of businesses and lawyers with the goal of personal profit, not with the goal of creating healthy democracies.
If this war ends, the exploitation of their natural resources and the international sale of those resources has to be transparent enough to prevent another rise-to-power of an elite that suppresses their own population on behalf of non-Ukrainian business partners.
Yeah, no. The USSR breakup was largely internal, and most of the crimes were done by Russians against Russians. There were many non-Russians who wanted pieces of the pie, but their entire economy needed to be rebuilt. Many other countries ended up as healthy democracies.. but Russia didn't. Current leader is an ex secret policeman who came to power by both producing fake scares to crack down against and by employing large numbers of economicists to redistribute wealth to his chosen all-Russian elite... while cracking down on other Russians who didn't agree with him taking over.
I phrased the first part of the post poorly. The aid was made after the USSR broke up, not before. There were government-sponsored diplomatic/administrative people who were attempting to support the transition of the Russian government and to safeguard against nuclear-related sales, etc.
Besides the government-sponsored westerners, there were business-sponsored westerners who were interested in exploiting the resources of Russia. These guys partnered with Russians, selling them expertise and high-tech equipment, then the Russians ran the business while the westerners took a cut of the profit. This
1992 NY Times article shows how a half-dozen non-Russian oil companies were competing in Russia 10 months after the USSR broke up. Putin is still using the equipment those westerners installed and that he took using Russian-on-Russian crime.