President Trump on Thursday signed an executive order that targets North Korea and countries that do business with the “criminal, rogue regime” to isolate it internationally and put an end to its “efforts to develop the deadliest weapons known to humankind.”

“The new order significantly expands our authority to target individuals, companies and financial institutions that finance and facilitate trade with North Korea,” Trump announced before a lunch with Japanese Prime Minister Shinzo Abe and South Korean President Moon Jae In.

The president said the the order will disrupt North Korean President Kim Jong Un’s ability to raise funds for his nuclear and missile weapons systems and chided other countries that help prop up Kim’s government.

“North Korea’s nuclear weapons and missile development is a grave threat to peace and security in our world. And it is unacceptable that others financially support this criminal, rogue regime,” Trump said, flanked by Vice President Pence and Secretary of State Rex Tillerson. “The brutal North Korea regime does not respect its own citizens or the sovereignty of other nations.”

He said the order gives Treasury Secretary Steve Mnuchin “enhanced” authority to target any “individual or entity” that carries out trade in “goods, services or technology” with Pyongyang.

“Foreign banks will face a clear choice – do business with the United States or facilitate trade with the lawless regime in North Korea,” he said. “And they won’t have so much trade.”

Trump, who in an address to the United Nations General Assembly on Tuesday vowed to “destroy” North Korea and called Kim “Rocket Man,” also thanked Chinese President Xi Jinping for his “very bold” move ordering his country’s banks to stop trading with the regime.

“And I’m very proud to tell you that, as you may have just heard moments ago, China, their central bank has told their other banks – that’s a massive banking system – to immediately stop doing business with North Korea. This just happened. It was just reported,” Trump told the gathering.

The Commander-in-Cheif’s actions come after the UN Security Council earlier this month imposing another round of financial sanctions against Kim, this time for his detonation of a nuclear device.

The ultimate intent of the executive order, Trump said, is the “complete denuclearization of North Korea.”

Asked by reporters if a diplomatic dialogue can continue with Kim, Trump answered, “Why not.”

The executive order also includes measures to prevent North Korea from evading the penalties and is designed to disrupt the country’s shipping and trade networks.

“For much too long North Korea has been allowed to abuse the international financial system to facilitate funding for its nuclear weapons and missile system,” Trump said, and went on to chide past presidential administrations for failing to put pressure on the regime.

“The United States has had representatives working on this problem for over 25 years and they have done nothing,” he said. “That’s why we’re in the problem that we’re in today, in addition to, frankly, other countries not doing what they should have done.”

Echoing his Tuesday address to the UN, Trump called for all nations to cooperate on disarming Kim’s government.

“The order provides us with powerful new tools, but I want to be clear the order targets just one country – North Korea,” he said, adding, “Many countries are working with us to increase economic and diplomatic pressure, but I call on all those responsible nations to enforce and implement United Nations sanctions and and impose their own measures like the ones I signed today.”