The world’s two biggest economies agreed to a temporary rollback of most of their recent levies after negotiating in Switzerland over the weekend.

High-level talks between the United States and China have begun in Geneva, Switzerland, Chinese state media reported on Saturday, in a possible thaw in the trade war sparked by President Donald Trump’s massive tariffs.

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.