Authorities have blocked the messaging app Telegram in Russia's Dagestan and Chechnya regions, citing security concerns, ...

Authorities in Russia's Dagestan and Chechnya have blocked the Telegram messaging app, citing security concerns.

Watch: Khamzat Chimaev breaks down crying as he helps carry Russian legend Buvaisar Saitiev's coffin at his funeral.

U.S. President Donald Trump's administration halted U.S. military aid and intelligence sharing with Ukraine as Europe prepares a post-America defense strategy.