Reactions in the United States to the killing of Iranian Maj. Gen. Qassem Soleimani have tended to fall into three broad categories. Those who support the strike argue that it eliminated a uniquely irreplaceable figure advancing Iran’s regional influence, while also reestablishing deterrence against Tehran.

Earlier this month, a prominent researcher and security expert in Iraq, who was close to the new prime minister and to Western governments, was gunned down outside his home in Baghdad.

If Iran is in fact responsible for the recent attack on Saudi oil facilities, whether directly or through its proxies in Yemen, it suggests that Iranian cruise missiles and drones are getting more sophisticated.