In North Korea’s most direct comment yet that the planned summit with the U.S. may be in jeopardy, a top official from the nuclear-armed country said Thursday that it will reconsider the meeting if Washington continues with “unlawful and outrageous acts” — a reference to a “Libya-style” coerced denuclearization.

In a statement carried by the official Korean Central News Agency, Choe Son Hui, a North Korean vice foreign minister, said the fate of the June 12 summit in Singapore between leader Kim Jong Un and U.S. President Donald Trump rested entirely on the shoulders of the United States.

“Whether the U.S. will meet us at a meeting room or encounter us at nuclear-to-nuclear showdown is entirely dependent upon the decision and behavior of the United States,” Choe said.