North Korea on Thursday said upcoming military drills between South Korea and the U.S. imperil planned family reunions, just one day after the two Koreas had reached a date for them.

The threat, which reportedly originated with the North’s influential National Defense Commission, was released via state media.

“Dialogue and exercises of war of aggression cannot go hand in hand,” the statement read.

This follows weeks of urging by the North’s state-run media to cancel the upcoming Key Resolve and Foal Eagle exercises. This includes Wednesdayin the Korean Central News Agency, which cited a previous proposal by the NDC