The United Nations Security Council unanimously voted to increase sanctions on North Korea on Friday after weeks of negotiations between the U.S. and China, citing the regime’s repeated missile tests.

China’s support comes after the Trump administration has repeatedly pressured China to rein in its aggressive southern neighbor.

"The security council is sending a clear message to North Korea today - stop firing ballistic missiles or face the consequences," U.S. ambassador to the U.N. Nikki Haley said after the vote.

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The U.N. resolution sanctions four North Korean entities, which include trading firms Koryo Bank and the Strategic Rocket Force of the Korean People’s Army as well as fourteen people.

The blacklist officials include the head of North Korea’s foreign espionage operation and members of the Korean Workers’ Party.

The sanctions come amid increased tensions between the isolated regime and the Trump administration.

Vice President Mike Pence said "the era of strategic patience" between the U.S. and North Korea was over during a visit to the demilitarized zone between North and South Korea in April.

President Trump has also implied the U.S. would not back down in the face of North Korea's aggressive behavior.

"There is a chance that we could end up having a major, major conflict with North Korea. Absolutely," Trump said in April.

"We'd love to solve things diplomatically but it's very difficult.”