Or at least attempting to. Azerbaijan started shelling Armenia near the border last night without warning, and has advanced troops (which are being pushed back at this time, I don’t think they’ve taken any territory yet).

Armenia could invoke article 4 of the CSTO and get Russia to help, but they don’t. Not yet at least. People are saying the Armenian president is a shill for Azerbaijan and will not escalate the conflict.

There are Russian bases in Armenia as well as border guards and Azerbaijan told them to evacuate because they could not guarantee their safety. Russian forces have said they will not move from their positions, which I expect to mean they might not engage Azerbaijani forces, but will defend themselves.