Two US supersonic bombers flew over South Korea on Wednesday, with one of them landing at an air base 40 km (25 miles) south of the capital, according to a Reuters witness, the second such flight since North Korea's Sept. 9 nuclear test.
Two US B-1 bombers flew over South Korea in a show of force and solidarity with its ally after North Korea's nuclear test last week, while a US envoy called for a swift and strong response to Pyongyang from the United Nations.
North Korea is ready to conduct an additional nuclear test at any time, South Korea's Defence Ministry said on Monday, three days after the reclusive North's fifth test drew widespread condemnation.
The US may launch unilateral sanctions against North Korea, a US special envoy for the isolated state said on Sunday, two days after it carried out its fifth and biggest nuclear test in defiance of UN sanctions.
North Korea conducted its fifth and biggest nuclear test on Friday and said it had mastered the ability to mount a warhead on a ballistic missile, ratcheting up a threat that rivals ...
The UN Security Council hastily met for closed-door talks on North Korea's failed test-firing of ballistic missiles, the latest defiance from Pyongyang of UN resolutions.
North Korea fired a submarine-launched ballistic missile off its east coast, South Korea said, amid concerns that the isolated state might conduct a nuclear test or a missile launch.
North Korea on Monday fired five short-range missiles into the sea off its east coast - the latest in a series of missile launches ordered by leader Kim Jong-Un amid rising military tensions.
North Korea ordered all South Koreans to leave the jointly-run Kaesong industrial zone immediately and announced it was seizing all materials left in the complex.
North Korea said it had successfully put a satellite into orbit, with a rocket launch widely condemned as a disguised ballistic missile test for a weapons delivery system to strike the US mainland.
The US sent a heavy bomber over South Korea on Sunday in a show of force as North Korean leader Kim Jong-Un insisted his country's latest nuclear test was carried out in self-defence.
South Korea resumed high-decibel propaganda broadcasts into North Korea as the US ramped up pressure on China to bring Pyongyang to heel after its latest nuclear test.