An American destroyer continues to shadow a North Korean ship off China's coast.The situation sets up what could be the first test of a new U.N. Security council resolution authorizing members states to inspect North Korean vessels suspected of carrying banned weapons or materials. The cargo ship left port a week ago and appears to be headed for Myanmar -- about a two-week journey. The sanctions are punishment for an underground nuclear test that the communist regime carried out last month in defiance of earlier U.N. resolutions. Pyongyang has said it would consider the interception of any North Korean vessel "an act of war." State media today is accusing the U.S. of fostering "the worst-ever tension" between the Koreas. While a U.S. official said a week ago that the U.S. destroyer has not order to intercept the ship, experts says it will need to refuel soon. The resolution prohibits member states from providing such services to ships accused of transporting banned goods.