NKorea fires missile ahead of nuclear security summit

North Korea conducted yet another missile test Tuesday, although this time the target was apparently land-based rather than at sea according to South Korea's military.

The missile reportedly flew 200 kilometers (125 miles) from the reclusive state's east coast, and is suspected to have been fired via the same multiple rocket launcher system that was celebrated as being ready for action by the North last week after it sent five projectiles into open water.

Pyongyang was also behind the launch of medium-range missiles this month and a long-range rocket in February, following its fourth ever nuclear test at the start of the year.

As a result of those provocations, which were carried out in defiance of multiple United Nations resolutions, North Korea was hit by strengthened sanctions.

The North responded by intensifying its push to develop nuclear weapons -- releasing repeated threats to attack South Korea and the United States, as well as boasting of new nuclear warhead technology.

Earlier Tuesday, Seoul had officially announced plans for South Korean President Park Geun-hye to hold meetings with her U.S., Chinese and Japanese counterparts on the sidelines of this week's Nuclear Security Summit in Washington D.C.

That in itself might have been enough to prompt Pyongyang to display its displeasure by launching another missile -- especially given China's status as a traditional North Korean ally.

But the North has also been bristling over massive ongoing military drills involving U.S. troops south of the border.