Sergei udaltsov detained

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Russian protest leader detained for causing "mass disorder"

A criminal investigation has been opened into Russia's protest leader, Sergei Udaltsov.

Russia treason law a blow for human rights, critics say

New wording expands definition of treason to include domestic threats, not just foreign.

Russian police arrest political opposition leader Sergei Udaltsov in Moscow on March 20, during a 'Day of Anger' rally. Thousands of protesters rallied in dozens of Russian cities against Prime Minister Vladimir Putin's government as opposition groups mobilised anger over economic woes.

ALEXEY SAZONOV

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