No one would claim that the Iran War has been a political godsend for President Donald Trump and the Republican Party. But some Israel-First conservatives are willing to say—and lately have been incessantly saying—that the Iran War hasn’t been a political scourge. Those Israel-First conservatives are wrong, even if the devil is, at least partly, hidden in the details. The Iran War has damaged Trump’s approval ratings, consumed his presidency, and darkened the GOP’s prospects in the upcoming midterm elections. A chief proponent of the argument that Trump hasn’t suffered all that much from the Iran War is Ben Shapiro...