(Reuters) – Russia will soon deploy its newest howitzers to its Northern Military District which borders Finland and Norway, the head of the Rostec state defence conglomerate said in remarks published on Wednesday. The testing of the new Coalition-SV self-propelled artillery units has been completed and their mass production has already started, Sergei Chemezov, the head of Rostec told the state RIA news agency in an interview. The first pilot batch will be delivered by the end of 2023, he said. “I think they will appear there (in the Northern Military District) soon, since howitzers of this c…