Iran will get 24 J-10 fighters from China in exchange for signing a contract to allow Beijing to utilize its largest oilfield over the next 20 years, according to a Taiwanese media report.
The cost of a single J-10 is estimated at $40 million, making the value of the deal around $1 billion. But Iran will not pay a dollar for the transaction. Instead, they will grant Beijing a 20-year exploitation right to the Azadegan oilfield.
With a range of 2,940 kilometers, the fighters are capable of defending Iran's entire airspace and that of the Persian Gulf.
http://en.people.cn/n/2015/0806/c90000-8931964.html