President Trump’s blockbuster week saw him torch Iran sanctions after Khamenei’s victory lap, ink a rare earth-packed trade deal with China, and dodge a Senate bid to curb his war powers—all while reminding Washington who’s calling the shots.

By attacking Iran, President Trump has shown he is willing to engage in a distant war. This raises questions in Beijing about what he might risk for Taiwan.

President Trump said China can purchase Iranian oil, despite his administration’s imposition of numerous sanctions designed to impede such t