Tillerson says North Korea strategy is working

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SEOUL, South Korea (AP) - U.S. Secretary of State Rex Tillerson says he doesn't think a new diplomatic strategy for North Korea is warranted.

Tillerson is speaking after President Donald Trump and North Korea exchanged threats that have raised concerns about a potential military confrontation. North Korea's army said it was studying a plan to create an "enveloping fire" in areas around Guam

But Tillerson says the current U.S. strategy is working.

Tillerson is pointing to new pressure the world is putting on North Korea, including sweeping new U.N. sanctions that the United States orchestrated. He says "the pressure is starting to show." Tillerson says he believes that's why North Korea's rhetoric is becoming louder and more threatening.

Tillerson says North Korea still has a way out in the form of negotiations, under the right conditions.