The trade war this year between China and the United States started with a bang, a fast-and-furious escalation of tariffs to astronomical levels. In the ensuing months, both countries showed a willingness to pull back and not shut down trade between the world's largest economies. But they have made little discernible progress in resolving their differences on trade. On Monday, after a fourth round of talks, U.S. Treasury Secretary Scott Bessent said the two sides would talk about trade again in about a month.