The sanctions are definitely biting and as far as technological enhancements go, it's not as if Iran seeks technology for designing and fabricating chips. All the technology they've ever required for what they deem as necessary for their existence namely in manufacturing missiles, enriching uranium and designing the N bomb was achieved under the overhang of sanctions. It's not as if their patrons viz China or Russia are willing to transfer technology in advanced munitions and it's delivery platforms once sanctions are lifted. You're conflating two very different issues in order to show that sanctions in its current form or enhanced sanctions in the future will prove ineffectual in case of Iran which is clearly not the case.
Agreed. But even if the EU is against the unilateral withdrawal of the US from the N pact with Iran, it's companies are all going to comply with US sanctions. Not a single one is even contemplating insulating itself from US sanctions by continuation of trade with Iran. The same is true of the Chinese or Russians inspite of their deterioration of ties with the US.
You seem to be underestimating US power and overestimating the power of the Chinese and the Russians to combat such sanctions as well as the power of such sanctions in debilitating Iran and it's economy.
American sanctions can hurt daily life in Iran, but it will not erode Iran's military capabilities like it did against Iraq because of their indigenisation drive.
The problem for Iran is their economy was ridiculously weak even without the sanctions. They are already in the doghouse considering they have been in the FATF blacklist for over 10 years now, alongside N Korea.
Please refer to my statement once more. I clearly mentioned the US invasion of Iran whereas you seem determined to conflate my statement with India's reconquest of PoK.
I brought in Iran in order to show why the situation is similar to Pakistan. If the US can't deal with Iran conventionally without sacrifice, then expecting India to take POJK without sacrifice is impossible as well.