U.S. detects "highly unusual" N. Korean submarine activity: CNN

The U.S. military has detected "highly unusual and unprecedented levels" of North Korean submarine activity in the wake of that country's second intercontinental ballistic missile launch late last week, CNN said Monday.Citing a defense official, the television news channel reported that North Korea on Sunday carried out a trial of the missile component that is critical to developing submarine launch capabilities.The "ejection test," carried out Sunday on land at the Sinpo Naval Shipyard, was the third this month and fourth this year. It came after North Korea test-launched its second ICBM l…READ FULL ARTICLE