to deliberately inflate the prevalence of certain religions, especially the larger ones, for political aims. For instance, Islamic and Orthodox leaders routinely claim that their religions have respectively 20 million and 120 million adherents in Russia, by counting all the individuals belonging to the ethnic groups which historically belonged to these religions. By applying the ethnic principle, people who are indifferent to religion or are outspoken atheists, those who have converted to a different faith to that assigned by nationality, and people who participate in religions which historically have not been associated to specific ethnic groups in Russia—namely Old Believers, new Russian converts to Protestantism, Catholicism and Eastern religions, and others—are automatically excluded from the calculations. Another criterion to count religious populations in Russia is that of "religious observance". Based on this principle, very few Russians would be religious. It has been found that between 0.5% and 2% of people in big cities attend Easter services, and overall just between 2% and 10% of the total population (3 to 15 million people) are actively practising Orthodox Christians. The proportion of practising Muslims among ethnic groups which are historically Islamic is larger, 40% to 90% depending on the group, and yet smaller than any assumption based on the ethnic principle. The most accurate criterion to count religious populations in Russia is that of "self-identification", which allows to count also those people who identify themselves with a given religion but do not actually practise it. This principle provides a picture of how much given ideas and outlooks are widespread among the people. Nevertheless, it has been noted that different people often give different meanings to the same identity markers; for instance, large percentages of people who self-identify as "Orthodox" have been found to believe that God is a "life force", to believe in reincarnation, astral connections, and other New Age ideas. Another method that has sometimes been used to determine the magnitude of religions in Russia is to count the number of their officially registered organisations. Such criterion, however, leads to inaccurate assumptions for various reasons. There is not the same arithmetic relationship between religions' number of local organisations and the number of their believers, as different religions have different organisational structures. Furthermore, different religions have different attitudes towards the registration of their organisations, and secular authorities register some without difficulties while hinder the registration of others. For instance, the Russian Orthodox