Despite the humor that comes with calling the leader of North Korea “Rocket Man,” the situation with the rogue nation is steadily becoming more dangerous.

According to a new report, the threat of nuclear war posed by North Korea has grown to an “unprecedented” level amid escalating tensions, and now requires the U.S., Japan, and South Korea to demonstrate “different responses” to the threat, a Japanese official said Monday.

Speaking with the U.S. and South Korean counterparts at a meeting of Asian defense chiefs in the Philippines, Japanese Defense Minister Itsunori Onodera said “[The] threat posed by North Korea has grown to the unprecedented, critical and imminent level,” according to a Reuters report. “Therefore, we have to take calibrated and different responses to meet with that level of threat.”

The comments among defense chiefs follow a report that North Korea’s biological weapons program could kill tens of thousands of people and “create panic and paralyze societies.”

For more on this story, click the "read more" button below.