While the final presidential debate has traditionally been focused on foreign policy, the final debate in 2020 will instead have six topics. Foreign policy will be one of them, but so will “leadership,” “American families,” and “race in America.” Those are important issues, but there are very good reasons for why the final debate should involve only foreign policy.

First off, foreign policy cuts to the heart of what it is to be president. While there are important debates over where the line of executive power should be drawn on matters of war and peace, the president has great flexibility to conduct foreign affairs. President Trump has evinced as much with his unconventional diplomatic outreach to North Korea, his functional inversion of the Obama administration’s Iran policy, and his significant increase of U.S. pressure on China.