SEOUL, Aug. 5 (UPI) — Kim Yo Jong, the powerful sister of North Korean leader Kim Jong Un, warned Wednesday that Pyongyang could adopt “additional military options” against Japan, accusing Tokyo of becoming a “war state” through its expanding military capabilities.

Kim made the remarks in a statement carried by the state-run Korean Central News Agency.

“Japan, a war criminal state, is accelerating its transformation into a war state,” she wrote, claiming that Tokyo was exploiting growing geopolitical tensions to boost its offensive military capacity.

She cited Japan’s recent test-firing of U.S.-made Tomahawk cruise missiles from a destroyer in the Pacific Ocean and its March deployment of long-range surface-to-ship missiles and high-speed gliding projectiles at bases in Kumamoto and Shizuoka prefectures as examples of Tokyo’s changing military posture.

Kim also pointed to Japan’s participation in U.S.-led military exercises in the Philippines in May, where it launched offensive missiles outside its territory for the first time since World War II.

Kim claimed that Japan’s growing arsenal of long-range weapons was transforming its Self-Defense Forces into an offensive military.

“The mass possession of different kinds of long-range strike means with an unexpectedness of preemptive attack and a drastic increase in the radius of their operation … make Japan reorganize its overall armed forces as a formation of preemptive attack and overseas aggression,” she wrote.

Kim also accused the United States of driving Japan’s military expansion, saying Tokyo and Seoul were acting as Washington’s “shock brigade” in the region.

“Japan’s military expansion in the Asia-Pacific region, which is being turned into the world’s biggest hotspot due to the U.S. exclusive and aggressive foreign policy … seriously threatens international peace and stability,” she wrote.

North Korea has repeatedly criticized the administration of Japanese Prime Minister Sanae Takaichi, a hawkish conservative who took office in February, over efforts to strengthen Japan’s military and broaden its regional security role.

Tokyo has bolstered its defense posture since adopting a new National Security Strategy in late 2022 that calls for acquiring “counterstrike capabilities,” including long-range missiles intended to strike enemy launch sites if Japan comes under attack.

In a commentary published in KCNA on Tuesday, North Korea condemned a recent U.S.-led multinational naval exercise in Hawaii and criticized military cooperation among Washington and its regional allies, including the Pentagon’s recent move to upgrade U.S. Forces Japan into a joint force headquarters with expanded operational responsibilities.

Kim said North Korea should make Japan “regret” its growing military ambitions.

“One effective way is to make Japan feel that its security has been exposed to greater danger due to its greediness,” she wrote. “We will never remain a passive onlooker to the military evolution of Japan which may pose a grave threat to the security of the Democratic People’s Republic of Korea.”

The Democratic People’s Republic of Korea is the official name of North Korea.

“I make it clear upon authorization that the armed forces of the DPRK and the military leadership will set up additional military options which are obviously due to Japan’s transformation,” she added.