The latest warnings from Pyongyang follow weeks of rising tensions, which promise to escalate further when the US and South Korea joint naval exercises begin Monday.
"We have almost achieved the final point on the way to our ultimate goal, to achieving a real balance of force with the United States", Ri was quoted as telling the reporters visiting Pyongyang this week.
Over the last two years, North Korea has conducted nuclear tests and launched missiles in response to joint drills, which have led to unprecedented UN Security Council Sanctions, including a new round adopted unanimously last month.
The article ended with a familiar warning: that the U.S. would be exclusively responsible for "pushing the situation on the peninsula to the point of explosion".
Kim Jong Un recently visited the Red Flag Mangyongdae Revolutionary School, an elite school in Pyongyang, the second civilian-related visit the North Korean leader has made in a week.
Anyone anxious that the United States-North Korea impasse is heading to a nuclear showdown should relax.
On Wednesday, Trump also characterized a diplomatic deal with North Korea brokered under former President Bill Clinton as a failure. But Trump has added to tensions in recent weeks by employing similarly tough talk, threatening to "totally destroy" or rain down "fire and fury" on North Korea. "Let's hope that diplomacy works", the chief of staff said. They have detected three similar tremors from near the test site since the North's nuclear test on Sept 3, in which North Korea said it detonated a hydrogen bomb.
He said they were merely taking an order put in by Yu Chol Pak, who is listed on the Federal Ministry of Europe's website as the third secretary to the North Korean ambassador in Austria.
Kelly added that Americans should be concerned that the North is getting closer to achieving the ability to hit the mainland USA with its missiles.