Tensions are deepening as the U.S. has sent an aircraft carrier to waters off the peninsula and is conducting its biggest-ever joint military exercises with South Korea. Pyongyang, meanwhile, recently launched a ballistic missile and some experts say it could conduct another nuclear test at virtually anytime.

“That is something that our headquarters decides,” Han said of what would be North Korea’s sixth nuclear test. “At a time and at a place where the headquarters deems necessary, it will take place.”

Many North Korea watchers believe North Korea could have a viable nuclear warhead and a ballistic missile capable of hitting the U.S. mainland on Trump’s watch as president — within the next few years.

Han, however, said North Korea blames Trump and the U.S. for the rising tensions. He cited not only the U.S.-South Korean wargames and the deployment of the aircraft carrier, the USS Carl Vinson, but also a tweet Trump posted Tuesday in which he said the North is “looking for trouble.” Trump also tweeted that if China doesn’t do its part to rein in Pyongyang’s nuclear ambitions, the U.S. can handle it.

“Trump is always making provocations with his aggressive words,” Han said. “So that’s why. It’s not the DPRK but the U.S. and Trump that makes trouble.”

The annual military exercises have consistently infuriated the North, which views them as rehearsals for an invasion. Washington and Seoul deny that, but reports that exercises have included “decapitation strikes” aimed at the North’s leadership have fanned Pyongyang’s anger.

“As long as the nuclear threats and blackmail go on with the military exercises, we will carry forward with our national defense buildup, the core of which is the nuclear arms buildup,” Han said.

“Whatever comes from the U.S., we will cope with it. We are fully prepared to handle it.”

Outwardly, there are few signs of concern in North Korea despite the political back and forth. Instead, the country is gearing up for its biggest holiday of the year, the 105th anniversary of the birth of the late Kim Il Sung, the country’s founder and leader Kim Jong Un’s grandfather.

The Saturday anniversary may provide the world with a look at some of that arsenal. Expectations are high the North may put its newest missiles on display during a military parade that could be held to mark the event.