Kosachev noted that the danger and risks of such an operation must also be assessed, according to Lenta.ru.
The Senator stressed though that it is too early to make any predictions about Russia's actions.
Kosachev's comments came after Armenian Prime Minister Nikol Pashinyan said that Russia has a legitimate right and reasons to react to Turkey and Azerbaijan's transfer of terrorist mercenaries from Syria to the Karabakh conflict zone.
Armenia was the first to report on Turkey's deployment of thousands of Syrian fighters to Azerbaijan. International media publications followed suit, as did reactions from France, Russia Iran and Syria.
Azerbaijan, with help from Turkey and Syrian and Libyan mercenaries deployed by Ankara, started a war against Karabakh (Artsakh) in the morning of September 27. The Armenian side has reported deaths and injuries both among the civilian population and the military. Foreign and local journalists too have been injured in Azeri shelling of towns and villages.
Donations can be made to Hayastan All-Armenian Fund, which has launched a fundraising campaign to support humanitarian efforts in Karabakh.