Why might western nations be willing to make loans to troubled russia?

It is very simple why western nations might be interested in investing in Russia. First of all, the population is almost 145 million. This represents many customers who get to buy your products somewhere else than in your country. Second of all, those customers haven't been exposed to as many diversity in products. There isn't competition like in westernized countries where a new company pops up regularly. This means that companies who open there have a free market where there isn't too much competition. This means a lot to companies because competition is ferocious in western nations.