Why would I? I never said they didn't provide chemical weapons to Iraq. I already knew they did. You are the one who refuses to accept that East Germany was a major supplier of chemical weapons to Iraq because it is against your idea of holding Russia to be holy.
Just to shatter your idea of Russian holiness, I also need to remind you that the Russians have a history of atrocities against Iranians. Read about what the Russian Tsarist Army did to Iranian citizens in Tabriz and northwestern regions of Iran. They are also professional rapists. Most notably, the Red Army raped over a million German women after they conquered Berlin.
I am consistent when it comes to criticism of the West, not now but I have been doing that for years, before you even joined PDF, but I have never seen you criticize Russia or China even once.