U.S. Secretary of State Rex Tillerson spoke by telephone with China's top diplomat on Tuesday and affirmed the importance of a constructive U.S.-China relationship, and the two agreed on the need to address the threat posed by North Korea, the State Department said.

Tillerson and Yang Jiechi, China's state councilor, also discussed economics and trade as well as potential cooperation on counterterrorism, law enforcement and transnational crime, the State Department said in a statement.

The call appeared to be the latest effort by the world's two largest economies to put relations back on an even keel after a rocky start following U.S. President Donald Trump's November election victory.