[global network reporter Xu Luming] according to the “defense emergency news” website on August 15, the United States and Israel held the second stage of the “lasting lightning” joint exercise at the beginning of this month, which aims to improve the combat capability of the F-35 fifth generation fighters of the US and Israel air forces. < / P > < p > during the exercise, the F-35 fighters from the 140th squadron of the Israeli air force and the f-35a fighters from the 421st expeditionary fighter squadron of the US air force were trained together, and an Israeli AWACS aircraft was dispatched to provide air command support. < / P > < p > compared with the first phase of the “prolonged lightning” exercise held earlier this year, this exercise has made significant progress. The F-35 fighter plane of Israel joined up with kc-10 tanker of the 908th expeditionary air tanker squadron of the U.S. Air Force during the exercise and completed the aerial refueling operation. F-35 fighter pilots from the United States and Israel conducted cooperative operation training of communication system, and also conducted red and blue confrontation simulation exercises. This gives the F-35 pilots of the United States and Israel the opportunity to practice together how to defeat the enemy’s advanced air defense systems and fighters. The reality facing the United States and Israel is that they must destroy Iran’s air defense systems and fighter planes before they can carry out further attacks on their ground targets, according to the report. Such concerns about Iran’s growing military capabilities are not groundless. < / P > < p > Iran has been equipped with advanced Russian made air defense weapon systems, such as the S-300 air defense missile. In 2019, Iran also seeks to purchase Russian made S-400 air defense system. Although Russia has rejected Iran’s request, Russia may seize this opportunity to sell Iran S-400 air defense systems, fighter planes and other weapons and equipment if the arms embargo is lifted. In July this year, Iranian foreign minister Zarif visited Moscow twice. Iran’s ambassador to Russia, Jalali, made it clear that Iran sought to “enhance its defense capability” by purchasing weapons from Russia. According to the report, this is particularly bad for the United States, Israel and other countries, because Iran already has certain anti intervention / regional rejection capability, and further enhancement of its combat strength will greatly increase the risks faced by the US and Israeli troops. Compared with the old fighters, the combat effectiveness of the F-35 fighters equipped by the United States and Israel has been significantly improved, which is the key to contain Iran. At this time, it is more important for the United States and Israel to carry out joint exercises such as “lasting lightning”.