Now it's understandable why Russia was insisted on offering us s400
about bavar , they previously said they are going to introduce a bavar-2 soon , maybe the first bavar was an unfinished work in progress after all we knew Sayyad 4 is part of Bavar Package but we saw a test of it. and also we never saw or see a report of it actually being deployed.What is the assumption based on that it wasn't operational before? Also the statement attributed to the military official in this latest news report is in composite tense ("peyvaste ast"), which could as well mean that Bavar-373 has been operational for quite some time. Indeed that is what the sum of all official declarations in this regard implies.
another matter is when iran announce a weapon usually we announce its deployment 1-2 year later and the weapon being deployed is having some modification with final product. we usually announce weapons when they are in working order but the final refined product is shown 1-2 year later