# Udaltsov convicted of justifying terrorism

Date: 2025

In December 2025 a Russian military court convicted Left Front coordinator [Sergei Udaltsov](/people/sergei-udaltsov) of justifying terrorism online and sentenced him to six years in a high-security penal colony. The charge concerned a Telegram post supporting members of a Marxist reading group in Ufa accused of terrorism. He went on hunger strike after his arrest.

## People

- Sergei Udaltsov: https://factrail.ai/people/sergei-udaltsov

## Sources

- https://tass.com/society/2064887
- https://www.themoscowtimes.com/2025/12/26/leftist-activist-sergei-udaltsov-jailed-6-years-for-justifying-terrorism-a91553
- https://www.pbs.org/newshour/world/russian-pro-war-activist-and-putin-critic-detained-over-alleged-terrorism-offenses-his-lawyer-says

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/udaltsov-terrorism-justification-sentence-2025