President Joe Biden and his national-security team began their time in office in 2021 intending to concentrate on confronting China’s rise. The state of the world has not allowed such a singular focus. First came the American withdrawal from Afghanistan and the Taliban’s return to power. Next was Russia’s full-scale invasion of Ukraine. Now Hamas has carried out its barbaric terrorist attack against Israeli citizens, triggering a forceful response from Israel and potentially a major interstate war in the Middle East. Americans are lucky to have President Biden and his foreign-policy team in charge of national security right now. Their experience and knowledge extends not just to China and Asia but to the world, and they have made smart moves in defense of American interests and values. From the start, Secretary of State Antony Blinken and President Biden both traveled to Israel to signal strong American support for a democratic ally. In times of crisis, allies need to show up; once there, Blinken and Biden delivered appropriate messages about shared values, Israel’s right to self-defense, …