Update at 16:00 EST: This article has been updated to include comment from an expert and a State Department spokesperson. It was later updated to include remarks from Secretary of Defense Mark Esper.

Joint U.S.-ROK Military drills this week represent a “betrayal” and a “breach” of the Singapore agreement between President Donald Trump and North Korean leader Kim Jong Un, a spokesman for the country’s State Affairs Commission (SAC) said in a statement released Wednesday.

The spokesman for the SAC — the highest-ranking state organ in the North Korean government — said that DPRK-U.S. relations are now on the verge