In a stunning turn of events, U.S. President Donald Trump called off his landmark meeting with North Korean leader Kim Jong Un on Thursday, citing “tremendous anger and open hostility” in a recent statement released by Pyongyang’s state-run media.

In a letter released by the White House addressed to Kim, Trump thanked the North Korean leader for his "time, patience and effort" in regards to the recent negotiations, but said that he felt it "inappropriate, at this time, to have this long-planned meeting."

While canceling the meeting, which would have been the first between a sitting U.S. president and a North Korean leader, Trump also appeared to issue a warning.