The new appointment underlines Japan's desire to revive the constitution, notes Stratfor's Rodger Baker.
The Joint Chiefs of Staff said in a statement that the missile was launched toward the waters off the North's east coast.
North Korea's foreign minister said the United States had destroyed the possibility of a nuclear-free Korean peninsula, Yonhap reported
North Korea says its ballistic missile test simulated strikes against South Korean ports and airfields used by the U.S. military.
North Korea fired three ballistic missiles into the sea that had a range of up to 360 miles, South Korea said.
North Korea fired a submarine-launched ballistic missile on Saturday, but it appeared to fail in the early stages of flight, South Korea's military said.
The U.S. is asking other nations to cut the employment of North Korean workers to reduce Pyongyang's access to foreign currency, a U.S. official said.
The joint military exercise is meant to create an intelligence sharing platform to counter threats from North Korea, says NTU's Michael Raska.
North Korean said it is now a nuclear threat to be reckoned with, and Washington can expect more nuclear tests and missile launches.
The isolated country launched what appeared to be a second ballistic missile after the first one failed.
North Korea launched what appeared to be an intermediate-range missile to a high altitude in the direction of Japan before it plunged into the sea.
North Korea launched what appeared to be a second missile on Wednesday that flew about 250 miles before falling in the Sea of Japan.
A government source sees signs of North Korea preparing a launch of the intermediate-range Musudan missile.
Japan's military is on alert for a possible North Korean ballistic missile launch, a government source said.
A North Korean diplomat who was part of the talks aimed at ending the country's nuclear program arrived on Monday in China, Kyodo news agency said.
John Mack, former chairman and CEO of Morgan Stanley, tells CNBC he sees "geopolitical risk" as the biggest threat to global prosperity.
The isolated state may have added six or more weapons to its stockpile within the past 18-months.
North Korea may have added another four to six nuclear weapons since last year, a U.S. research institute said on Tuesday.
North Korea has restarted production of plutonium fuel, showing that it plans to pursue its nuclear weapons program in defiance of sanctions.
CNBC's Eamon Javers on breaking news regarding the U.S. imposing money restriction on North Korea.