Fine. Let's just say that a number of wealthy countries, all for their own various reasons of aggressive self-interest, armed and in varous ways assisted Iraq in the 1980's with the intention of administering a serious defeat to Iran and hopefully bringing down its Islamic government. Russia was one of those countries. The USA was another. They failed utterly in their objective, because the Iranians outfought the Iraqis.

I'm suggesting that the Iranians fought very hard against invasion once before, and they will do so again.