How Do Trump and Harris Differ on European Defense?

With the trans-Atlantic relationship one of the biggest foreign-policy differences between Donald Trump and Kamala Harris, how will the two manage European defense in Ukraine and beyond? In a special series, “America Votes: What It Means for the World,” Nathalie Tocci argues that both candidates will push Europeans to take on more of their own defense, although Trump will do it more abruptly and Harris with more bilateral coordination.