Kremlin stays silent on missile systems seen on Moscow

The Kremlin has refused to say whether Russia is preparing to defend itself against possible attacks after images of missile defence systems on several rooftops in Moscow circulated on social media.
Images on social media appeared to show a Pantsir-S1 mobile anti-aircraft system on the roof of a building in central Moscow about 2km (1.2 miles) east of the Kremlin and a Pantsir on the roof of the Ministry of Defence building located along the Moscow River across from Gorky Park.