Currently, Russia does not require foreign citizens to renounce their citizenship when acquiring Russian citizenship. Since 2023, the concept of "multiple citizenship" has been established in Russian legislation and is considered normal.
There are two important factors to consider in terms of retaining existing citizenship:
1. Not all countries allow their citizens to hold multiple citizenships. Some countries require a special permit to acquire another citizenship, while others have exceptions that allow for multiple citizenships. However, there are also countries that strictly prohibit having any other citizenship. Therefore, if you plan to acquire Russian citizenship, it is necessary to find out your state's position on multiple citizenship.
2. Once you acquire Russian citizenship, Russia will only recognize you as a citizen of the Russian Federation, regardless of your other citizenship. Your other citizenship will only be taken into account if a "dual citizenship" agreement exists between the countries.