The United Nations Security Council unanimously voted in favor of the strictest sanctions levied yet on Kim Jong Un’s North Korean regime on Friday.  This new round of sanctions will significantly reduce the nation’s access to crude oil and petroleum-based products, and aims to cut Kim off from one of his more important foreign revenue sources.

While previous sanctions had already limited North Korea’s oil imports to 2 million barrels, the new round of sanctions will now limit them to only 500,000 barrels of refined petroleum per year.   Further, the sanctions demand the repatriation of North Koreans working abroad within 24 months, though the United States reportedly originally pushed for a timeline half that long.

The U.N. Resolution also sets standards to further limit oil imports into North Korea for any subsequent nuclear weapon or ballistic missile tests.

Although the U.S. and U.N. have each continued to levy stricter and stricter sanctions on North Korea as Kim Jong Un has continued to pursue nuclear weapons and the ballistic missile platforms he hopes to carry them, thus far, the sanctions have not seemed to slow the despotic leader’s progress.  North Korea’s ballistic missile program has seen significant leaps in technological capability over the past year, so much so, in fact, that some have wondered if the nation has been receiving outside assistance from a more established nuclear power, such as China or Russia.