In short the answer is yes you do need a separate visa for Belarus.  Your Russian Student Visa doesn't allow you to enter Belarus.

The reason that it has the names of both countries is because the form they use is exactly the same.  From the US Embassy in Moscow:


  Although Russia and Belarus use the same migration card, travelers should be aware that each country maintains its own visa regime.  U.S. citizens wishing to travel to both nations must apply for two separate visas.  A traveler entering Russia directly from Belarus is not required to obtain a new migration card, but at his or her option may do so if blank ones are available at the time of entry.


Do I need a visa to visit Belarus if I have a Russian visa?
Is encrypting the password hash in database more secure than storing only the hash?

Suppose we store encrypted SHA-256 result with AES instead of hash directly. Is this a good protection from a situation in the future when someone will break one of the algorithms?
