"The basis of Armenia's external security is a military alliance with Russia, which has been fixed by several dozen agreements," Pashinyan was quoted by TASS as saying.
He explained that in the context of the Armenian-Russian joint grouping of forces and the unified air defense system, "an attack on Armenia means an attack on Russia."
Pashinyan also said that Armenia and Russia are discussing the possibility of expanding the 102nd Russian military base in Gyumri.
Earlier, Pashinyan, at a meeting in Moscow with Russian leader Vladimir Putin, said that the presence of Russian peacekeepers in Nagorno-Karabakh is an important security factor in the region.
At the end of March, he also urged to think about strengthening the Armenian-Russian grouping to counter modern security threats.