8 most difficult countries to gain citizenship

Liechtenstein

Liechtenstein, a tiny, mountainous country between Austria and Switzerland, has a population of just under 40,000 — and the country's immigration policy appears to aim to keep it small.If you want to become a citizen, you need to live in Liechtenstein for at least 30 years, with each year before you turn 20 counting as two years. If you're married to a Liechtenstein citizen and already live in the country, that time period is shortened to five years of marriage.If you want a shortcut from the 30-year residency requirement, you can ask your community to vote you in after 10 years. Regardless of method, you'll have to give up your current citizenship.