The United Nations Security Council has expanded sanctions against North Korea in response to the country's nuclear weapon test last month.
The 15-member body voted unanimously Friday to approve a resolution condemning North Korea's tests.
Under increased sanctions, U.N. member states have the authority to inspect all cargo heading to or from North Korea and suspected of containing material related to the country's nuclear and missile programs. The resolution also bans weapons exports from the country and tightens financial restrictions.
Speaking at the White House, the U.S. ambassador to the U.N., Susan Rice, praised the new sanctions, calling them tough and saying the resolution is unprecedented. She said it would not be a surprise if North Korea reacted with what she described as "further provocation."
One of the resolution's strengths is that it has the backing of Pyongyang's allies, China and Russia.