Make no mistake that the Arms race between Iran and the rest of the Sunni states has just begun.  For every fighter Iran purchases the Sunni states have to buy three to sustain themselves in this arms race.

The article states: “Iran is about to conclude a transaction with China for the purchase of the Chengdu J-10 multirole jet fighter, known in the West as the Vigorous Dragon, according to an exclusive report from DEBKAfile’s military and intelligence sources. Beijing has agreed to sell Tehran 150 of these sophisticated jets.”

“While the Chinese J-10 is comparable to the US F-16, our sources report that it is virtually a replica of the Lavi, the super-fighter developed by Israel’s aerospace industry in the second half of the 80s. Israel sold China the technology, after Washington insisted on Its discontinuing the Lavi’s production. The US also objected to the sale of the Lavi’s avionics, claiming that it contained some American components.”
“The Chinese plane comes in two versions – the multirole single-seat J-10A and the two-seat J-10B, which serves for training, ground assaults and electronic warfare.  Iran has additionally weighing the purchase in Moscow of 250 highly-advanced Sukhoi-Su-30MK1 twinjet multirole air superiority fighters, known in the West as Flanker-H.”

http://defencetalk.net/threads/iran-orders-from-china-150-j-10-fighter-jets-that-incorporate-israeli-technology.6702/