Very likely directed by Iran, Iranian proxies on Wednesday launched a rocket attack on a U.S. base northwest of Baghdad. Two Americans and one British service member were killed.

This incident signifies two things. First, that Iran remains determined to exact new costs on America over its killing of Iranian Gen. Qassem Soleimani in early January. Second, that Iran is increasingly unrestrained in its foreign security policy. Retaliating against Iran’s proxies, U.S. and perhaps also British fighter jets struck bases in eastern Syria, killing around 20 fighters.