Critical languages
Encyclopedia
There are certain foreign language
Foreign language
A foreign language is a language indigenous to another country. It is also a language not spoken in the native country of the person referred to, i.e. an English speaker living in Japan can say that Japanese is a foreign language to him or her...

s in some countries that are considered to be critical from the security
National security
National security is the requirement to maintain the survival of the state through the use of economic, diplomacy, power projection and political power. The concept developed mostly in the United States of America after World War II...

 point of view. The classification and listing of critical languages is different from country to country depending, besides Language and National Security, upon several factors.
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