North Korea on Sunday labeled President Trump a "war merchant and strangler of peace."
CNN reported that the comments came in a commentary from state newspaper Rodong Sinmun posted by the Korean Central News Agency.
The commentary went after Trump for selling weapons to South Korea and Japan while at the same time spurring "a hair trigger situation" on the Korean peninsula.
"This should have been handled 25 years ago, it should have been handled 20 years ago, and 10 years ago, and five years ago," Trump told Fox News's Sean Hannity in an interview.
"It should have been handled by numerous — not just Obama, but certainly President Obama should have taken care of it. Now it's at a point where it's very, very far advanced," he added. "Something has to be done. We can't allow this to happen."