Yes, Indian citizens applying for a Russian tourist visa will need an invitation letter. This letter must come from either a Russian travel agency or a hotel, as it serves as proof that you have arranged accommodation for your stay. The letter should include your travel dates and the specific hotel or agency you’ll be using. If you’re staying with friends or family, you’ll need a private invitation letter from them, which must be registered with the Russian authorities. The invitation letter is one of the most critical documents in the application process, so make sure it’s official and accurate. You can find more information on how to obtain this letter at https://clearthesmoke.org .