Ukraine war latest: Russia bolsters Moscow air defense as drone threat increases (opens in new tab)

Key developments on May 28: * Russia deploys new Pantsir systems on Moscow rooftops as Ukrainian drone threat grows * 3 Russian shadow fleet tankers attacked by drones near Turkey's Black Sea coast * Sweden announces 16 Gripens for Ukraine * Ukraine strikes Tuapse oil refinery again, General Staff vows 'systematic' strikes on Russia's military-industrial targets * Norway opens talks on joining French nuclear deterrence initiative Russia appears to have begun deploying new Pantsir-SMD-