Assertion: frigate | /r/HasProperty | armed with kashtan anti-aircraft missile
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text: The frigates are armed with a new 3M-54 Klub attack anti-ship system with a vertical missile launcher, Shtil-1 multi-channel medium-range surface-to-air missile system (an export version of the SA-N-12 "Grizzly"), a Kashtan anti-aircraft missile and artillery system, a RBU-6000 depth charge launcher and Puma-Universal artillery system.