MOSCOW: Russian President Vladimir Putin on Sunday (Dec 22) vowed to bring more "destruction" to Ukraine in retaliation for a drone attack on the central Russian city of Kazan a day earlier. Russia accused Ukraine of a "massive" drone attack that hit a luxury apartment block in the city, some 1,000 kilometres (620 miles) from the frontier. Videos on Russian social media networks showed drones hitting a high-rise glass building and setting off fireballs, though there were no reported casualties