A country will have to compete with other countries to attract FDI. One trend in the Global economy is to make capital flow in a very mobile way, in and out of the country. Then there is consideration about rates of return which the country has to offer Multinational Enterprises. Higher interest rate is necessary but not a sufficient condition if there coexist exchange rate and other risks. You may want to consider what financial economists consider as Operating, Transaction, and Translation Exposure to potential entrant.
Here I only wanna draw your attention to the fact of Breath Time which can be defined as a duration after lifting the sanctions. Countries tend to see what the country (which is free now) does and plans to do in future. Attracting FDI can be a good plan in this period. It can encourage other countries to trust and increase their investment.