Scott Bessent, the US Treasury Secretary, finished a two-day negotiation marathon with Chinese Vice Premier He Lifeng in Geneva on Sunday, landing what he called “substantial progress” in a deal meant to tone down the aggressive trade war between the two countries.

The U.S. and China had “productive” trade negotiations over the weekend, U.S. officials said Sunday, without announcing any further details.

The White House said it was announcing a trade deal, without providing any details. Representatives from the U.S. and China had been meeting in Switzerland.