Why isn't Russia defending its ally Armenia from Azerbaijan's attack? to

Why isn't Russia defending its ally Armenia from Azerbaijan's attack? _
Please!Thank you very much. Hello friends. Unlike the United States which has 52 allies – Russia only has 5 official allies. These are the countries of the Collective Security Treaty Organization (CSTO), which was founded in 1992. These include: Armenia, Belarus, Kazakhstan, Kyrgyzstan and Tajikistan. Basically, this organization is like NATO. When a country is attacked by an enemy and violates its territory, another country is obliged to provide military assistance. Since the beginning, the organization has not had the opportunity to show its commitment. Share this video on your social networks to support my growth!network to support my growth!I sincerely appreciate it.
Hello, buddies. Russia has only 5 official allies, compared to 52 for the United States. These are the nations that make up the 1992-founded Collective Security Treaty Organization (CSTO). Armenia, Belarus, Kazakhstan, Kyrgyzstan, and Tajikistan are among them.
In essence, this group is comparable to NATO. Other nations are required to lend military support when an enemy invades a nation and launches an attack. The organization hasn't had a chance to show its dedication since its inception. War broke out between Armenia and Azerbaijan until 2020. However, Russia, the leader of the organization, stood up