<span style="color: #222222;">North Korea today said that it has conducted submarine-launched cruise missile tests. The missile test came Yesterday, a day before the U.S. and South Korean militaries begin large-scale joint military drills that North Korea views as a rehearsal for invasion.<br />''<br />''South Korea's Joint Chiefs of Staff said that South Korean and U.S. intelligence authorities were analyzing details of the operation.<br />''<br />''North Korea sees regular South Korea-U.S. military exercises as a major security threat, though the allies say their drills are defensive.</span><br />