North Korea yesterday lashed out at Japan's prime minister for seeking to revise Tokyo's pacifist post-second world war constitution, calling Shinzo Abe a "militarist maniac".
In a New Year comment, Abe said the country's constitution, which limits its military to self-defence, could be amended by 2020, days after his visit to a war shrine in Tokyo enraged Asian neighbours.
China and South Korea see the Yasukuni Shrine as a reminder of Japan's wartime aggression and failure to repent for its history.
The visit also angered the North, which last month slammed the conservative Japanese leader for "reckless behaviour" that would push Japan into "self-destruction".
The North's ruling party newspaper, Rodong Sinmun, yesterday heaped criticism on Abe for the New Year message, saying that Tokyo's leaders should "behave themselves".
"What Abe said was dangerous outbursts which brought to light the true colours of a militarist maniac," it said in an editorial.
Accusing the prime minister of seeking to "bring back the era ... when the Japanese imperialists could dominate Asia", the paper said that Tokyo was taking the path of "self-destruction".
"If the present ruling forces of Japan have even an iota of reasonable thinking, they should face up to the reality and behave themselves," it said.
The communist state has habitually slammed Tokyo for failing to repent for its 1910-1945 occupation of the Korean peninsula and what it calls Japan's military ambitions.
The North's nuclear and missile programmes have raised security concerns in Japan, which last month announced it would boost its military budget, spending US$240 billion between 2014 and 2019 to buy fighter jets and other military hardware.
The move drew a response from the North, which called it a "crafty and sinister attempt to justify Japan's arms build-up and reinvasion scheme".
Watch: Japan PM Abe visits Yasukuni war shrine