The national flag of the Slovak Republic (Slovak: Vlajka Slovenskej republiky) was adopted by Slovakia's Constitution, which came into force on 3 September 1992. The flag, like many other flags of Slavic nations, uses Pan-Slavic colors (red, white, and blue). Pictured in the centre of the flag is the Slovakia's national coat of arms. Since the Slovak flag without the coat of arms is identical to the current flag of the Russian Federation, and can also be compared to the modern flag of Slovenia, the Constitution of Slovakia added the national coat of arms to it in September 1992. (Source: Wikipedia.org, CC BY-SA)