First Russia then Iran blocks Telegram. Telegram isn't a very good app anyway. It has questionable crypto and a closed source server doing who knows what. But government censorship isn't the way to deal with it.

Although I like XMPP, and Conversations is pretty good these days with default end-to-end encryption, I reckon that the future of messaging apps has to be peer to peer. That's the only way to stop bogus bureaucrats trying to prevent people from communicating. A government which fears people chatting is a pretty good indicator of its lack of legitimacy.