Oh for god sake, leave those tweets, they dont knkw shit like anyone else, Iranian officials gave few details but all contracts and agreements will be beld secret till last moment, simple due secondary sanctions threat from US and also Iran current situation. Iran defense minister, as IRGC and other officials told few times, after embargo Iran and Russia will need new agreements and contracts, it will include upgrade and new jets... how much, no one know, it depends from many factors... also it is confirmed China-Iran 25 years deal....it will start from November... including military side....Iran need upgrade for its existing fleet and new jets, since it is imposible to buy so many aircrafts in short time to replace whole fleet, and it doesnt work like that even if Iran vas money and Russia and China can produce so many aircraft. Russia cant even to catch own air forces orders...Upgrade for existing fleet along with new orders will make sure everything goes smooth... you cant just replace 400 aircrafts with new,and considering Russian foreign and domestic orders.... they cant deliver to much over short period, and it doesnt make sense to order 4+ gen aircrafts that will be delivered in 5-6 years when it is expecting 5th gen Russian and Chinese aircrafts will be available than. Olso it no government will throw huge sum of money in short period in situation when country is under sanctions and covid-19. So Iran will probably go for few smaller contracts over 1-2 year rather than one huge.... this olso better suits Russia and China in current situation.... There will be probably many technology transfer and boost to Iranian domestic projects, this can be done almost under table without to much pomp....