1. Vatican City
Vatican City is one of the smallest countries on Earth having about 450 citizens only. It has the toughest immigration policies, and that’s one of the reasons for its small population. You can become a citizen of Vatican City only if you are a cardinal living in Vatican City or Rome, Holy See, or if you are a worker in Vatican City for the Catholic Church.
2. North Korea
3. Liechtenstein
Liechtenstein is another country that wants to keep its population short. It is a mountainous country located between Austria and Switzerland and has a population under 40,000. The strict immigration policy of the country hardly gives citizenship to any foreigner. To become a Liechtenstein national, you need to live in the country for at least 30 yrs. However, it can be reduced to five years if you are married to a Liechtenstein citizen & already lived in the country.
Bhutan is the loneliest country in the world. You need two Bhutanese parents to become a citizen of the country. If you have only one, you will need to apply for naturalized citizenship after living for more than 15 years in Bhutan. Bhutan has strict rules to provide citizenship for its country. It reserves the right to reject your citizenship for any or no reason.
5. China
Foreigners who want to gain citizenship in China are required to have Chinese relatives who are settled in the country. If you don’t have any relatives in China, then chances are very less that you will get citizenship of the county. Long-term residency in the country is mandatory to have citizenship but not specified. Also, you cannot have dual citizenship while living in China.
6. Saudi Arabia
The country hardly grants citizenship unless you are a Muslim. However, you can apply for citizenship if you lived in the country for over 20 years. Also, you need to renounced previous citizenship and convert it to Islam. Children with a Saudi father can also have citizenship in the country.
7. Austria
Austria has one of the toughest and longest immigration processes to become a citizen. If you are not a citizen of any European country and want to live longer than six months, you must apply for residence before arriving in Austria. You can apply for citizenship only if you live permanently in the country for 10 years. Also, you need to renounce your previous citizenship if approved by the government.
San Marino is the smallest country with about 33,000 residents. The county hardly provides citizenship to any foreigner. Citizenship is possible only if you are living in the territory of San Marion for about 30 years. However, it can be reduced to 15 years if married by a San Marino resident.
9. Germany
Obtaining citizenship in Germany is very difficult unless you are from another European country. To avail citizenship, you must know the German language, their political system, and their society. Applicants must have a source of income in Germany and must contribute to the national pension plan to avail the citizenship. Also, the applicant must have stayed in the country for at least 8 years.
10. Japan
Japan has the longest process to provide citizenship to any foreigner. If you want to have citizenship in japan, you must have lived in the country for about 5 years and taken permission from the Justice Minister. It requires lots of paperwork and a long process of around 6-12 months. Also, you need to renounce previous citizenship if approved.