Russia deployed some 2,000 peacekeepers to Nagorno-Karabakh over the last two weeks after a peace deal ended the war between Azerbaijani and Armenian forces which erupted on September 27.
Russia's President Vladimir Putin says Turkey was a member of the Minsk Group on the Nagorno-Karabakh settlement from the very beginning but was never granted a co-chair status.
Russia's results are only the second from a late-stage human trial, following on swiftly from data released by Pfizer Inc and BioNTech, which said their shot was also more than 90 percent effective.
Russia and Turkey are consistently at odds with each other, so how does the relationship survive without boiling over?
Earlier in the day, Baku shot down two Armenian warplanes, Azerbaijan's Defence Ministry said.
Russian President Putin, who has praised President Donald Trump in the past for saying he wanted better ties with Moscow, has said Russia will work with any US leader, while noting what he called Joe Biden's "sharp anti-Russian rhetoric".
Pushed by Germany, where Kremlin critic Alexey Navalny was treated after collapsing on a flight from Siberia, and France, the EU has targeted six Russians and a scientific research centre.
Foreign ministers meeting in Luxembourg agreed in principle to sanctions proposals for Russia over poisoning of opposition leader Alexey Navalny as well as against Belarus President Alexander Lukashenko for alleged rigging in August elections.
Russian Foreign Minister Sergey Lavrov's announcement comes after marathon talks between the two countries' top diplomats in Moscow.
The country opened a criminal investigation to establish why rivers close to polluted waters were found with higher levels of pollutants.
Belarusian opposition leader Svetlana Tikhanovskaya faces a charge in Belarus over making public calls to harm the country's security.
Kremlin critic Alexey Navalny has said he believed Russia's intelligence services poisoned him with a rare nerve agent because authorities saw him as a threat ahead of next year's parliamentary elections.
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