"We do view it as a provocative act against the United States and our allies," Tillerson said in an interview on Fox News Sunday, according to Reuters.

Read alsoNorth Korea tests short-range missiles as South Korea, U.S. conduct drills - Reuters"We're going to continue our peaceful pressure campaign as I have described it, working with allies, working with China as well to see if we can bring the regime in Pyongyang to the negotiating table," he said.