The United States, Japan and South Korea will hold two days of missile tracking drills starting tomorrow, as tensions rise in the region over North Korea's fast-developing weapons programs. <br/><br/>Japan's Maritime Self-Defense Force said the exercises will be the sixth drills sharing information in tracking ballistic missiles among the three nations, the defense force said.<br/>'<br/>The United States and South Korea conducted large-scale military drills last week, which the North said made the outbreak of war an established fact.<br/>'<br/>North Korea has fired missiles over Japan as it pursues nuclear weapons and ballistic missiles in defiance of U.N. sanctions and international condemnation. <br/><br/>On Nov. 29, it test-fired an intercontinental ballistic missile which it said was its most advanced yet, capable of reaching the mainland United States.<br/>

The United States, Japan and South Korea will hold two days of missile tracking drills starting tomorrow, as tensions rise in the region over North Korea's fast-developing weapons programs. <br/><br/>Japan's Maritime Self-Defense Force said the exercises will be the sixth drills sharing information in tracking ballistic missiles among the three nations, the defense force said.<br/>'<br/>The United States and South Korea conducted large-scale military drills last week, which the North said made the outbreak of war an established fact.<br/>'<br/>North Korea has fired missiles over Japan as it pursues nuclear weapons and ballistic missiles in defiance of U.N. sanctions and international condemnation. <br/><br/>On Nov. 29, it test-fired an intercontinental ballistic missile which it said was its most advanced yet, capable of reaching the mainland United States.<br/>