Get what you need to know to start your day. Even before the drone strike that killed three U.S. service members in Jordan on Sunday‚ the Biden administration was planning for a moment just like this‚ debating how it might strike back in ways that would deter Iran’s proxy forces and send a message that Tehran would not miss. But the options range from the unsatisfying to the highly risky. Mr. Biden could order strikes on the proxy forces‚ a major escalation of the whack-a-mole attacks it has...