Russian President Vladimir Putin made an unannounced visit to a frontline command-and-control centre in Southern Russia. The Kremlin says the control room that Putin visited is in charge of military operations in Ukraine. During his visit to the post in Rostov-on-Don, Putin was briefed by top military generals on Russia's offensive in Ukraine. Earlier, Putin also made a surprise visit to Crimea, marking the ninth anniversary of the peninsula's reunification with Russia. He also visited Mariupol in Ukraine that Russia claims to have annexed. Watch this video for details. Hindustan Times, owned by HT Media Ltd, is one of India’s largest publications that provides unbiased news, analysis and features on politics, sports, entertainment, lifestyle and more. Hindustan Times delivers the news across all social media platforms, on the web, and at your doorstep.