Supreme Court in Russia ruled Telegram must provide FSB with encryption keys to access users messaging data. Media watchdog Roskomnadzor asked Telegram to share technical details to access electronic messages shared through the instant messaging app. If Telegram will refuse to comply the request the authorities will block the service in Russia. In July, the company agreed to register with Russia authorities to avoid the local ban, but it did not share user data. The Russian Government threatened to ban the popular messaging app because the company refused to be compliant.”]
Source: http://securityaffairs.co/wordpress/70491/laws-and-regulations/telegram-fsb-law.html