Russia launched a massive strike on Ukraine, firing over 400 drones and 40 missiles across the country, killing at least six people and injuring dozens more, CNN reported, citing a Ukrainian official's statement.

Russian forces are advancing in the northern Ukrainian region of Sumy, bringing the regional capital within range of their drones and artillery, according to Ukrainian officials and analysts.

By Guy Faulconbridge and Lidia Kelly MOSCOW (Reuters) -Russian forces on Wednesday advanced further into Ukraine's northern region of Sumy, threatening the regional capital after taking more than 150 square km (58 sq miles) of the area in less than two weeks,