Iran tested and deployed the Russian-made S-300 anti-aircraft missile system that has long worried U.S. and Israeli military officials because it gives the Islamic Republic a “generational improvement in capabilities,” the Pentagon’s Defense Intelligence Agency disclosed, according to Bloomberg.

Russia delivered the S-300, also known as the SA-20c SAM system, in 2016, providing Iran with its most advanced air-defense system. Now, Iran has “the flexibility of a highly mobile, long-range, strategic surface-to-air missile,” Lieutenant General Robert Ashley, the DIA director, said in written testimony submitted Tuesday to the Senate Armed Services Committee.


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