U.S. President Barack Obama signed an executive order on Tuesday clearing the way for sanctions against a broad array of foreign businesses operating on behalf of or within North Korea.
China will continue playing an outsized role in international efforts to deter North Korea from advancing its nuclear weapons program but South Korea and the United States also "have much more work left to do," according to Washington, D.C. attorney Joshua Stanton.
The U.S. Senate on Wednesday unanimously approved legislation that would require the White House to determine whether North Korea should be blacklisted under the Patriot Act.