Ukrainian drones hit a tanker in the southern Russian port of Rostov-on-Don, killing and injuring a number of people and sparking a fire, the city's mayor was quoted as saying early on Thursday."Emergency teams are extinguishing the fire on the tanker that was struck while docked in a drone attack…<p><p>https://www.marinelink.com/news/ukrainian-drones-hit-tanker-russias-533664</p></p>