MOSCOW, Sept. 21 (Xinhua) -- The Russian Foreign Ministry on Saturday demanded the Democratic People's Republic of Korea (DPRK) explain a latest ship inspection incident taking place in the Sea of Japan. A DPRK warship on Friday shot at a Russian fishing vessel without warning in the Sea of Japan before boarding the vessel, the ministry said in a statement. DPRK coast guards onboard the warship allowed the vessel, Altai, to continue its voyage after questioning the captain, said the ministry. No one was injured in the shooting, and the fishing boat was not damaged, the fishing company that owns...