Could anybody in here explain to me the difference between Pars-Khodro and Iran-Khodro? and where does both of them sale their cars?

I've been inquiring into it now and i am a bit confused now

Also there seem to be several 405 models between both, no? ive seen 405, RD (kind of rear wheel drive version of the normal one i see), Peugeot Pars (nice facelifted version of the normal 405) and another one called Peugeot Roa...

Where are these actually sold? ive read that the Pars is only sold in Russia yet Raul seemed tot ake a picture of a unit in Iran...

It's a mess! could any of you clarify me this?

Also about the Pars-Khodro Sepand, where is or was really sold? and until when? ive read that is now replaced by a newer model (which apparently in the exterior it just adds big plastic wheel wells, the body seems to be exactly the same as the old one) called just Sepand P.K?

Thanks beforehand