SEOUL, South Korea (AP) — North Korea said Friday it had tested a purported underwater nuclear attack drone in response to a combined naval exercise between South Korea and the United States and Japan this week, as it continues to blame its rivals for raising tensions in the region. The alleged drone test came days after North Korean leader Kim Jong-un declared he would scrap his country’s long-standing goal of a peaceful unification with South Korea and that his country would rewrite its constitution to define South Korea as its most hostile foreign adversary. North Korea’s alleged nuclear attack drone, which the North first tested last year, is among a broad range of weapon systems demonstrated in recent years as Kim expands his arsenal of nuclear-capable weapons. South Korea's military has insisted the North has exaggerated the capabilities of the drone, which is supposedly designed to carry out strikes on enemy vessels and ports. The North’s military said it conducted the test in the country’s eastern waters in response to the U.S., South Korean, and Japanese naval drills, which wrapped up its three-day run Wednesday in waters south of Jeju island.

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Persons: Kim Jong, Kim, “, ” Organizations: North, South, North’s Defense Ministry Locations: SEOUL, South Korea, North Korea, United States, Japan, U.S, South, Jeju, DPRK