Nowadays, little trouble between 2 countries are leading to war !!!
Here are the countries who have never participated in war and maintained the policy of peace.
1. San Marino
Oldest republic in the world , San Marino maintains a neutral stance.
2. Vatican City
Country is the center of Roman Catholic Church and relying on Swiss Guards for ceremonial purposes.
3. Costa Rica
This country abolished its army in 1949 and invests its resources in education and health care. Since then, it remained neutral and peaceful..
4. Switzerland
Though, not participated in wars , Switzerland maintains a steady defense system for national security.
5. Iceland
Because of its geographical isolation, it has no standing military.