The powerful sister of North Korean leader Kim Jong Un on Wednesday accused Japan of "transformation into a war state" as Tokyo beefs up its military stance in the Pacific. Advertisement AdvertisementAdvertisement AdvertisementIn a statement carried by North Korean state media, Kim Yo Jong said Pyongyang's "leadership will set up additional military options which are obviously due to Japan's transformation". "Japan, a war criminal state, is accelerating its transformation into a war state," said her statement published by the Korean Central News Agency. Advertisement AdvertisementAdvertisement AdvertisementOn Wednesday, Japan's defence ministry confirmed to AFP that the Tomahawk experiment last week was Japan's first. China -- a key ally North Korean -- has also recently expressed alarm at what it sees as "new militarism" by Japan.