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After the Soviet Union collapsed in 1991, the U.S. went on a secret buying spree to collect "a small number of Soviet missile defense systems so that they could be examined by U.S.

intelligence experts and help with training American forces," _The Wall Street Journal_ reports. Now, the U.S. is sending some of those air defense systems to Ukraine to help Ukrainian

forces shoot down Russian fighter jets and missiles. Ukrainian soldiers already know how to operate old Soviet weapons systems. President Biden was authorized to give Ukraine and NATO allies

the weapons systems from the secret Soviet stockpile under the annual spending bill he recently signed, and Congress has been notified about these transfers, the _Journal_ reports, citing

U.S. officials. "Ukraine already possesses some Russian air defense systems, including the S-300. It needs more such systems, however," and "the U.S. is hoping that the

provision of additional air defenses will enable Ukraine to create a de facto no-fly zone." Among the Soviet weapons systems the U.S. has given Ukraine are the SA-8 portable missiles

defense system, the _Journal_ reports. The SA-8 and SA-10, NATO's name for the S-300, "can operate at medium and long range to blunt Russia's aircraft and missile

attacks," whereas "the shoulder-fired Stinger missiles that the U.S. and NATO nations are providing to Ukraine are only effective against helicopters and low-flying aircraft."

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From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox. From our morning news briefing to a weekly Good News Newsletter,

get the best of The Week delivered directly to your inbox. The U.S. is also publicly negotiating with NATO former Soviet satellite nations to donate their S-300s and other old Soviet systems

to Ukraine, with the U.S. replacing the donated weapons with new U.S. systems. Slovakia agreed last week to send Ukraine some of its S-300 weapons once the U.S. provides it with Patriot or

other replacement air defense systems. Those talks are still ongoing. Explore More Speed Reads Russo-Ukrainian War