Each person non resident of the Russian Federation prior to applying for visa in the consulate must get an invitation according to the purpose of his or her visit.
Your Visa To Russia provides invitations for tourist and business trips.

Ivan the terrible’s descendants want to regain control of moscow kremlin

The Russian capital’s main landmark may soon get a new master as the offspring of the first Russian tsarsist dynasty are suing the state to get it back.

All Russia news »

Source: http://rt.com/prime-time/2010-08-18/tsar-descendants-want-kremlin.html