Seoul [South Korea], May 17 (ANI) North Korea has fired a ballistic missile towards the sea off its east coast, South Korea’s military said on Friday. South Korea’s Joint Chiefs of Staff did not immediately provide details, Yonhap news agency reported. The development comes at a time that Russian President Vladimir Putin is visiting the Chinese city of Harbin as part of his two-day State visit to China. Yonhap said the launch comes after the North fired 600-mm super-large shells, considered to be short-range ballistic missiles, toward the East Sea on April 22. Pyongyang has been conducting a s…