When Pavel Durov, a Russian tech entrepreneur who founded the Telegram messenger app, was arrested in Paris on Aug. 24 on accusations of allowing terrorism to blossom on his platform, Ukraine watched it closely. He was charged by a Paris court on Aug. 28.
In Ukraine, the charges against Durov
An initially Russian company, which moved to Dubai, which is most popular by all sorts of right wing Russian propagandists and used by the Russian military. Chances are pretty good that it is controlled by Russia at this point.
If you want a better alternative try Signal or XMPP.