The Moscow court said Shtein, who served as a Moscow municipal deputy until 2022, would begin her sentence once she could be extradited to Russia.
Islamic State has claimed responsibility for the massacre and US officials say they have intelligence showing it was carried out by the network's Afghan branch, Islamic State Khorasan.
Gershkovich, his paper, and the US government all strongly deny the charges against him, which carry a sentence of up to 20 years in jail.
The terror attack, which is the worst Russia has seen in years, has led to the authority's torture of the terrorists prior to their court hearings, as Russia seeks to lay blame on Ukraine.
Iran doesn’t care that much about the tactics in Gaza, it cares more about the grand strategy.
When asked if the assault represented an intelligence service failure, the Kremlin said that Russia's standoff with the West meant intelligence-sharing was not happening in the way it used to.
French officials were holding a meeting on Monday to look at specific measures to step up security, such as checking bags on entrance to concert halls or places of worship.