While the two Koreas are increasing cooperation for joint events... U.S. Defense Secretary James Mattis says the Olympics should not distract from the internationally agreed goal of denuclearizing North Korea. <br /> In a meeting Friday with his South Korean counterpart Song Young-moo at U.S. Pacific Command headquarters,... Mattis said he welcomes the talks on Olympics-related matters, but the international pressure campaign must continue to pressure North Korea to denuclearize.<br />Mattis said "the Kim Jong-un regime is still a threat to the entire world" and that Washington's response remains focused on diplomacy, backed up by military options. <br />