WASHINGTON - 2022 is about to end. Looking back on U.S. diplomacy this year, we can characterize it as the culmination of a confrontational stance toward China. Enhanced controls over exports of semiconductors introduced in October are emblematic. In the United States, which has long been said to be polarized over many issues, the advocacy of good relations with China was once heard from some bureaucrats and businesspeople. This has faded, however, and now all voices are anti-China. Taiwan's significance has increased, which could put Japan in a difficult position.