National security adviser Jake Sullivan said Sunday that China should be pressured to “take significant, substantial action“ in reducing emissions and fight climate change.

Speaking on CNN’s “State of the Union,“ Sullivan said of China: “They should not able to hide behind any kind of claim that they’re a developing nation, to step up to their responsibility. And their responsibility under the Paris climate accord is to take significant, substantial action to reduce emissions on a defined time frame in the near-term.“

John Kerry, the former secretary of State who is President Joe Biden’s climate envoy, is due in Beijing to attempt to revive U.S.-China climate negotiations.