MOSCOW, April 16 —A Russian court found a Norwegian man guilty today of gathering espionage about Russian nuclear submarines and jailed him for 14 years in a verdict that could strain ties between Russia and its NATO-member neighbour.

Frode Berg, a retired former guard on the Norwegian-Russian border, was detained in Moscow in December 2017 and tried behind closed doors this month. He pleaded not guilty to charges of espionage on behalf of Norway. — Reuters