WASHINGTON A U.S. P-8A Poseidon reconnaissance plane flies near Chinese structures and buildings on the man-made Fiery Cross Reef at the Spratlys group of islands in the South China Sea are seen on March 20, 2022. (AP photo) China presents the top challenge to the United States in all of its history, surpassing the Cold War, a top U.S. official said Wednesday, as he urged Europe to get tougher on Beijing. Deputy Secretary of State Kurt Campbell, a key architect of a 15-year push for the United