The United States, Japan and South Korea will hold two days of missile tracking drills starting on Monday, Japan's Maritime Self-Defence Force said, as tensions rise in the region over North Korea's fast-developing weapons programmes.
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".
North Korea has fired missiles over Japan as it pursues nuclear weapons and ballistic missiles in defiance of UN sanctions and international condemnation. On November 29, it test-fired an intercontinental ballistic missile which it said was its most advanced yet, capable of