The number of air defense systems in central Moscow is being boosted to protect the Kremlin against Ukraine’s long-range drone attacks, Ukrainian media have reported. A video posted on social media last week claims to show a Pantsir-SMD-E  air defense system  being hoisted into position on top of the Nord Star business center by a military helicopter on a rainy day.   JOIN US ON TELEGRAM Follow our coverage of the war on the @Kyivpost_official . Ukrainian publication Defense Express said this