SEOUL (Reuters) - North Korea fired one ballistic missile from Pyongsong, a city in South Pyongan Province, at around 1817 GMT over the sea between South Korea and Japan, South Korea s Joint Chiefs of Staff said on Wednesday.  South Korea and the United States are currently analyzing what type of missile North Korea was fired, the military said in a text. Minutes after the North fired the missile, South Korea s military conducted a missile-firing test in response to the provocation, the South Korean military added. (This story corrects launch time to 1817 GMT, not 0617 GMT)  