President Joe Biden pointed to the U.S. competition with China as a reason for America’s withdrawal from Afghanistan, in a speech on Aug. 31 declaring the end of the 20-year conflict in the war-torn nation. Before commenting on China, he said the future U.S. foreign policy would draw from two lessons in Afghanistan. “First, we must set missions with clear, achievable goals—not ones we’ll never reach,” Biden said in the State Dining Room at the White House. “And second, we must stay clearly focused on the fundamental national security interest of the United States of America.” He said the United States will move away from “large-scale troop deployments” whose purpose was building a nation, and the shift “will make us stronger and more effective and safer at home.” “It’s about ending an era of major military operations to remake other countries,” he added. Now, Biden said the United States should …