Jake Sullivan, White House national security adviser, speaks during an interview at an Economic Club of Washington event in Washington, D.C., U.S., on Thursday, April 14, 2022.Jake Sullivan, White House national security adviser, speaks during an interview at an Economic Club of Washington event in Washington, D.C., U.S., on Thursday, April 14, 2022.

National security adviser Jake Sullivan met with China's top diplomat on Monday to discuss a range of security challenges facing the countries.

The talks, which took place in Luxembourg, were described as productive by a senior administration official.

An official who spoke on condition of anonymity said the meeting lasted nearly five hours and followed a May phone call between Sullivan andYang. The last time the two met in person was in Rome on March 14 and it was described as intense.

As the U.S. presses the world's second-largest economy not to help Moscow blunt global sanctions over the Kremlin's aggression in Ukranian, a meeting is taking place. In the weeks since Russia invaded its ex-Soviet neighbor, the United States and its allies have imposed a series of sanctions on Russia.

The Secretary of State said last month that China was the most serious long-term challenge to the international order.

In a May 26 speech at George Washington University, Blinken said that China was the only country with the intent to remake the international order.

The universal values that have underpinned so much of the world's progress over the past 75 years would be moved away by Beijing's vision.

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