https://www.theregister.co.uk/2018/04/09/russian_regulator_asks_courts_to_disconnect_telegram/

Russian telecoms and mass communications regulator Roskomnadzor has filed a lawsuit it hopes will see secure messaging app Telegram turfed out of the country.

Moscow’s been unhappy with Telegram for some time, dating back to a mid-2017 dispute over the company’s non-compliance with requests to register as a telecoms service provider. The service and the Kremlin have also tangled over access to encryption keys.